U.S. Route 1 or U.S. Highway 1 (US 1) is a major north–south

United States Numbered Highway The United States Numbered Highway System (often called U.S. Routes or U.S. Highways) is an integrated network of roads and highways numbered within a nationwide grid in the contiguous United States. As the designation and numbering of these hi ...

that serves the

East Coast of the United States The East Coast of the United States, also known as the Eastern Seaboard, the Atlantic Coast, and the Atlantic Seaboard, is the coastline along which the Eastern United States meets the North Atlantic Ocean. The eastern seaboard contains the coa ...

. It runs from

Key West, Florida Key West ( es, Cayo Hueso) is an island in the Straits of Florida, within the U.S. state of Florida. Together with all or parts of the separate islands of Sigsbee Park, Dredgers Key, Fleming Key, Sunset Key, and the northern part of Stock Isla ...

, north to

Fort Kent, Maine Fort Kent is a town in Aroostook County, Maine, United States, situated at the confluence of the Fish River and the Saint John River, on the border with New Brunswick, Canada. The population was 4,067 in the 2020 census. Fort Kent is home to a ...

, at the

Canadian border Canadians (french: Canadiens) are people identified with the country of Canada. This connection may be residential, legal, historical or cultural. For most Canadians, many (or all) of these connections exist and are collectively the source of ...

, making it the longest north–south road in the United States. US 1 is generally paralleled by

Interstate 95 Interstate 95 (I-95) is the main north–south Interstate Highway on the East Coast of the United States, running from U.S. Route 1, US Route 1 (US 1) in Miami, Miami, Florida, to the Houlton–Woodstock Border Crossing between M ...

(I-95), though US 1 is significantly farther west (inland) between

Jacksonville, Florida Jacksonville is a city located on the Atlantic coast of northeast Florida, the most populous city proper in the state and is the largest city by area in the contiguous United States as of 2020. It is the seat of Duval County, with which the ...

, and

Petersburg, Virginia Petersburg is an independent city in the Commonwealth of Virginia in the United States. As of the 2020 census, the population was 33,458. The Bureau of Economic Analysis combines Petersburg (along with the city of Colonial Heights) with Din ...

, while I-95 is closer to the coastline. In contrast, US 1 in Maine is much closer to the coast than I-95, which runs farther inland than US 1. The route connects most of the major cities of the East Coast—including

Miami Miami ( ), officially the City of Miami, known as "the 305", "The Magic City", and "Gateway to the Americas", is a East Coast of the United States, coastal metropolis and the County seat, county seat of Miami-Dade County, Florida, Miami-Dade C ...

, Jacksonville,

Raleigh Raleigh (; ) is the capital city of the state of North Carolina and the seat of Wake County in the United States. It is the second-most populous city in North Carolina, after Charlotte. Raleigh is the tenth-most populous city in the Southeas ...

Richmond Richmond most often refers to: * Richmond, Virginia, the capital of Virginia, United States * Richmond, London, a part of London * Richmond, North Yorkshire, a town in England * Richmond, British Columbia, a city in Canada * Richmond, California, ...

Washington, D.C. ) , image_skyline = , image_caption = Clockwise from top left: the Washington Monument and Lincoln Memorial on the National Mall, United States Capitol, Logan Circle, Jefferson Memorial, White House, Adams Morgan, ...

Baltimore Baltimore ( , locally: or ) is the List of municipalities in Maryland, most populous city in the U.S. state of Maryland, fourth most populous city in the Mid-Atlantic (United States), Mid-Atlantic, and List of United States cities by popula ...

Philadelphia Philadelphia, often called Philly, is the largest city in the Commonwealth of Pennsylvania, the sixth-largest city in the U.S., the second-largest city in both the Northeast megalopolis and Mid-Atlantic regions after New York City. Sinc ...

New York City New York, often called New York City or NYC, is the List of United States cities by population, most populous city in the United States. With a 2020 population of 8,804,190 distributed over , New York City is also the L ...

, and

Boston Boston (), officially the City of Boston, is the state capital and most populous city of the Commonwealth of Massachusetts, as well as the cultural and financial center of the New England region of the United States. It is the 24th- mo ...

passing from the

Southeastern United States The Southeastern United States, also referred to as the American Southeast or simply the Southeast, is a geographical region of the United States. It is located broadly on the eastern portion of the southern United States and the southern por ...

New England New England is a region comprising six states in the Northeastern United States: Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont. It is bordered by the state of New York to the west and by the Canadian provinces ...

. While US 1 is generally the easternmost of the main north–south U.S. Highways, parts of several others occupy corridors closer to the ocean. When the road system was laid out in the 1920s, US 1 was mostly assigned to the existing Atlantic Highway, which followed the

Fall Line A fall line (or fall zone) is the area where an upland region and a coastal plain meet and is typically prominent where rivers cross it, with resulting rapids or waterfalls. The uplands are relatively hard crystalline basement rock, and the coa ...

between the

Piedmont it, Piemontese , population_note = , population_blank1_title = , population_blank1 = , demographics_type1 = , demographics1_footnotes = , demographics1_title1 = , demographics1_info1 = , demographics1_title2 ...

and the

Atlantic Coastal Plain The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth#Surface, Earth's surface and about 29% of its water surface area. It is known to separate the "Old World" of Afr ...

north of

Augusta, Georgia Augusta ( ), officially Augusta–Richmond County, is a consolidated city-county on the central eastern border of the U.S. state of Georgia (U.S. state), Georgia. The city lies across the Savannah River from South Carolina at the head of its navig ...

. At the time, the highways farther east were of lower quality and did not serve the major population centers. From Henderson, North Carolina, to Petersburg, Virginia, it parallels

I-85 Interstate 85 (I-85) is a major Interstate Highway in the Southeastern United States. Its southern terminus is at an interchange with Interstate 65, I-65 in Montgomery, Alabama; its northern terminus is an interchange with Interstate 95, I ...

. Construction of the Interstate Highway system gradually changed the use and character of US 1, and I-95 became the major north–south East Coast highway by the late 1960s.

Route description

, - , FL , , - , GA , , - , SC , , - , NC , , - , VA , , - , DC , , - , MD , , - , PA , , - , NJ , , - , NY , , - , CT , , - , RI , , - , MA , , - , NH , , - , ME , , - , Total ,

Florida

US 1 travels along the east coast of

Florida Florida is a state located in the Southeastern region of the United States. Florida is bordered to the west by the Gulf of Mexico, to the northwest by Alabama, to the north by Georgia, to the east by the Bahamas and Atlantic Ocean, and to ...

, beginning at 490 Whitehead St. in

Key West Key West ( es, Cayo Hueso) is an island in the Straits of Florida, within the U.S. state of Florida. Together with all or parts of the separate islands of Dredgers Key, Fleming Key, Sunset Key, and the northern part of Stock Island, it cons ...

and passing through

Hollywood Hollywood usually refers to: * Hollywood, Los Angeles, a neighborhood in California * Hollywood, a metonym for the cinema of the United States Hollywood may also refer to: Places United States * Hollywood District (disambiguation) * Hollywood, ...

Fort Lauderdale A fortification is a military construction or building designed for the defense of territories in warfare, and is also used to establish rule in a region during peacetime. The term is derived from Latin ''fortis'' ("strong") and ''facere'' ...

Boca Raton Boca Raton ( ; es, Boca Ratón, link=no, ) is a city in Palm Beach County, Florida, United States. It was first incorporated on August 2, 1924, as "Bocaratone," and then incorporated as "Boca Raton" in 1925. The population was 97,422 in the ...

West Palm Beach West or Occident is one of the four cardinal directions or points of the compass. It is the opposite direction from east and is the direction in which the Sunset, Sun sets on the Earth. Etymology The word "west" is a Germanic languages, German ...

Jupiter Jupiter is the fifth planet from the Sun and the List of Solar System objects by size, largest in the Solar System. It is a gas giant with a mass more than two and a half times that of all the other planets in the Solar System combined, but ...

Fort Pierce Fort Pierce is a city in and the county seat of St. Lucie County, Florida, United States. The city is part of the Treasure Coast region of Atlantic Coast Florida. It is also known as the Sunrise City, sister to San Francisco, California, the Suns ...

Melbourne Melbourne ( ; Boonwurrung/Woiwurrung: ''Narrm'' or ''Naarm'') is the capital and most populous city of the Australian state of Victoria, and the second-most populous city in both Australia and Oceania. Its name generally refers to a met ...

Cocoa Cocoa may refer to: Chocolate * Chocolate * ''Theobroma cacao'', the cocoa tree * Cocoa bean, seed of ''Theobroma cacao'' * Chocolate liquor, or cocoa liquor, pure, liquid chocolate extracted from the cocoa bean, including both cocoa butter and ...

, Titusville,

Daytona Beach Daytona Beach, or simply Daytona, is a coastal resort-city in east-central Florida. Located on the eastern edge of Volusia County near the Atlantic coastline, its population was 72,647 at the 2020 census. Daytona Beach is approximately nort ...

Palm Coast Palm Coast is a city in Flagler County, Florida. As of the 2010 United States Census, the population was 75,180, more than twice the 32,832 counted in 2000. The population was estimated to be 89,800 in 2019. It is the most populous city in Flagler ...

St. Augustine Augustine of Hippo ( , ; la, Aurelius Augustinus Hipponensis; 13 November 354 – 28 August 430), also known as Saint Augustine, was a theologian and philosopher of Berber origin and the bishop of Hippo Regius in Numidia, Roman North Afri ...

, and

Jacksonville Jacksonville is a city located on the Atlantic coast of northeast Florida, the most populous city proper in the state and is the List of United States cities by area, largest city by area in the contiguous United States as of 2020. It is the co ...

. The southernmost piece through the chain islands of the

Florida Keys The Florida Keys are a coral cay archipelago located off the southern coast of Florida, forming the southernmost part of the continental United States. They begin at the southeastern coast of the Florida peninsula, about south of Miami, and e ...

, about long, is the 2-lane

Overseas Highway The Overseas Highway is a highway carrying U.S. Route 1 (US 1) through the Florida Keys to Key West. Large parts of it were built on the former right-of-way of the Overseas Railroad, the Key West Extension of the Florida East Coast Railwa ...

, originally built in the late 1930s after railroad tycoon

Henry Flagler Henry Morrison Flagler (January 2, 1830 – May 20, 1913) was an American industrialist and a founder of Standard Oil, which was first based in Ohio. He was also a key figure in the development of the Atlantic coast of Florida and founde ...

Florida East Coast Railway The Florida East Coast Railway is a Class II railroad operating in the U.S. state of Florida, currently owned by Grupo México. Built primarily in the last quarter of the 19th century and the first decade of the 20th century, the FEC was a pr ...

Overseas Railroad The Overseas Railroad (also known as Florida Overseas Railroad, the Overseas Extension, and Flagler's Folly) was an extension of the Florida East Coast Railway to Key West, Florida, Key West, a city located beyond the end of the Florida peninsula ...

, which was built between 1905 and 1912 on stone pillars, was ruined by the

Labor Day Hurricane of 1935 The Great Labor Day Hurricane of 1935 was the most intense Atlantic hurricane to make landfall on record by pressure, with winds of up to 185 mph (297 km/h). The fourth tropical cyclone, third tropical storm, second hurricane, and se ...

. The rest of US 1 in Florida is generally a 4-lane

divided highway A dual carriageway ( BE) or divided highway ( AE) is a class of highway with carriageways for traffic travelling in opposite directions separated by a central reservation (BrE) or median (AmE). Roads with two or more carriageways which are ...

, despite the existence of the newer

I-95 Interstate 95 (I-95) is the main north–south Interstate Highway on the East Coast of the United States, running from US Route 1 (US 1) in Miami, Florida, to the Houlton–Woodstock Border Crossing between Maine and the Canadia ...

not far away. Famous vacation scenic route

Florida State Road A1A State Road A1A (SR A1A) is a major north–south Florida State Road that runs along the Atlantic Ocean, from Key West, Florida, Key West at the southern tip of Florida, to Fernandina Beach, Florida, Fernandina Beach, just south of Georgia ( ...

is a continuous oceanfront alternate to US 1 that runs along the beaches of the

Atlantic Ocean The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the " Old World" of Africa, Europe ...

, cut only by assorted unbridged inlets and the

Kennedy Space Center The John F. Kennedy Space Center (KSC, originally known as the NASA Launch Operations Center), located on Merritt Island, Florida, is one of the National Aeronautics and Space Administration's (NASA) ten field centers. Since December 1968 ...

Cape Canaveral , image = cape canaveral.jpg , image_size = 300 , caption = View of Cape Canaveral from space in 1991 , map = Florida#USA , map_width = 300 , type =Cape , map_caption = Location in Florida , location ...

. North of Jacksonville, US 1 turns northwest towards

; US 17 becomes the coastal route into

Virginia Virginia, officially the Commonwealth of Virginia, is a state in the Mid-Atlantic and Southeastern regions of the United States, between the Atlantic Coast and the Appalachian Mountains. The geography and climate of the Commonwealth ar ...

, where US 13 takes over.

Google Maps Google Maps is a web mapping platform and consumer application offered by Google. It offers satellite imagery, aerial photography, street maps, 360° interactive panoramic views of streets ( Street View), real-time traffic conditions, and rou ...

street maps and

USGS The United States Geological Survey (USGS), formerly simply known as the Geological Survey, is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, a ...

topographic map In modern mapping, a topographic map or topographic sheet is a type of map characterized by large- scale detail and quantitative representation of relief features, usually using contour lines (connecting points of equal elevation), but historic ...

s, accessed vi
ACME Mapper
/ref> In Florida until the 1990s, US 1 used high-contrast markers (white text on a red background).

Georgia

The part of US 1 in

Georgia Georgia most commonly refers to: * Georgia (country), a country in the Caucasus region of Eurasia * Georgia (U.S. state), a state in the Southeast United States Georgia may also refer to: Places Historical states and entities * Related to the ...

, as it shifts from the coastal alignment in Florida to the Fall Line alignment in South Carolina, is generally very rural, passing through marshes and former

plantation A plantation is an agricultural estate, generally centered on a plantation house, meant for farming that specializes in cash crops, usually mainly planted with a single crop, with perhaps ancillary areas for vegetables for eating and so on. The ...

s between the towns and cities of Folkston, Waycross,

Alma Alma or ALMA may refer to: Arts and entertainment * ''Alma'' (film), a 2009 Spanish short animated film * ''Alma'' (Oswald de Andrade novel), 1922 * ''Alma'' (Le Clézio novel), 2017 * ''Alma'' (play), a 1996 drama by Joshua Sobol about Alma ...

, Baxley,

Lyons Lyon,, ; Occitan: ''Lion'', hist. ''Lionés'' also spelled in English as Lyons, is the third-largest city and second-largest metropolitan area of France. It is located at the confluence of the rivers Rhône and Saône, to the northwest of th ...

Swainsboro Swainsboro is a city in Emanuel County, Georgia, United States. As of the 2020 census, the city had a population of 7,425. The city is the county seat of Emanuel County. Geography Swainsboro is located near the center of Emanuel County at 32� ...

, and Augusta. The Georgia Department of Transportation has an ongoing plan to widen all of US 1 to four lanes with bypasses, which is more than 50 percent complete.

The Carolinas

South Carolina )''Animis opibusque parati'' ( for, , Latin, Prepared in mind and resources, links=no) , anthem = " Carolina";" South Carolina On My Mind" , Former = Province of South Carolina , seat = Columbia , LargestCity = Charleston , LargestMetro = ...

, US 1 generally serves mostly rural areas as it falls west of

while the coastal areas are served by routes east of it. Starting in South Carolina, US 1 is paralleled by

I-20 Interstate 20 (I‑20) is a major east–west Interstate Highway in the Southern United States. I-20 runs beginning at an interchange with I-10 in Scroggins Draw, Texas, and ending at an interchange with I-95 in Florence, South Carolina. Between ...

along the

through Aiken, Lexington, and Columbia to Camden and Lugoff. US 1 functions as a local 2-lane road with occasional boulevard stretches. After Camden, US 1 continues northeast away from any Interstate towards Bethune,

Patrick Patrick may refer to: * Patrick (given name), list of people and fictional characters with this name * Patrick (surname), list of people with this name People * Saint Patrick (c. 385–c. 461), Christian saint *Gilla Pátraic (died 1084), Patrick ...

, McBee and

Cheraw The Cheraw people, also known as the Saraw or Saura, were a Siouan-speaking tribe of indigenous people of the Southeastern Woodlands, in the Piedmont area of North Carolina near the Sauratown Mountains, east of Pilot Mountain and north of the Yad ...

with no bypasses or 4-lane sections except around Cheraw through the US-52 and

SC 9 SC-9 or variants may refer to: * South Carolina's 9th congressional district * South Carolina Highway 9 * ''SC09'', a FIPS 10-4 region code, see List of FIPS region codes (S–U) * ''SC-09'', a subdivision code for the Seychelles, see ISO 3166-2:S ...

concurrencies. After SC 9, it continues northward into North Carolina as a 2-lane highway. SCDOT has no plans to widen or bypass any US 1 alignments northeast of Camden to the North Carolina line. Between the South Carolina line and the US 74 bypass, US 1 is a 2-lane road but sees a considerable amount of truck and tourist traffic of people cutting through from the US 74/ US 220 and

I-73 Interstate 73 (I-73) is a north–south Interstate Highway, located within the US state of North Carolina. Currently, there is one continuous section of I-73, totaling , first traversing the U.S. Route 220 (US 220) freeway from ...

I-74 } Interstate 74 (I-74) is an Interstate Highway in the Midwestern and Southeastern United States. Its western end is at an interchange with I-80 in Davenport, Iowa (Quad Cities); the eastern end of its Midwest segment is at an interchange ...

corridor attempting to reach points south and east. US 1 goes through downtown Rockingham, with a bypass in the future plans. North of the NC 177 junction, it becomes 4 lanes or greater, becoming a super-street with limited access and then becoming a limited access freeway. US 1 becomes a major artery for the state as it moves north of Rockingham. After

Richmond County Richmond County may refer to places: Australia *Richmond County, New South Wales, a cadastral division Canada *Richmond County, Nova Scotia United Kingdom *Richmondshire, the original Richmond County in Yorkshire, England United States ...

, it goes into Moore County with two expressway bypasses in

Southern Pines Southern Pines is a town in Moore County, North Carolina, Moore County, North Carolina, United States. The population was 12,334 as of the 2010 United States Census. History Southern Pines was founded as a winter health resort for Northeastern U ...

, Vass and

Cameron Cameron may refer to: People * Clan Cameron, a Scottish clan * Cameron (given name), a given name (including a list of people with the name) * Cameron (surname), a surname (including a list of people with the name) ;Mononym * Cam'ron (born 197 ...

. US 1 continues with the

Jefferson Davis Highway The Jefferson Davis Highway, also known as the Jefferson Davis Memorial Highway, was a planned transcontinental highway in the United States in the 1910s and 1920s that began in Arlington, Virginia, and extended south and west to San Diego, Cal ...

label through Lee County and Sanford, and on to

Cary Cary may refer to: Places ;United States * Cary, Illinois, part of the Chicago metropolitan area * Cary, Indiana, part of the Indianapolis metropolitan area * Cary, Miami County, Indiana * Cary, Maine * Cary, Mississippi * Cary, North Carolina ...

and

. US 1 runs concurrently with US 64 through most of Cary, where the freeway recently underwent a major renovation and improvements that added lanes in both directions. North of Raleigh, US 1 (known as Capital Boulevard in northern Wake County) crosses I-540 and then again becomes a 4-lane divided arterial to

near

Henderson Henderson may refer to: People *Henderson (surname), description of the surname, and a list of people with the surname *Clan Henderson, a Scottish clan Places Argentina *Henderson, Buenos Aires Australia *Henderson, Western Australia Canada *He ...

. The North Carolina Department of Transportation has begun a corridor study for this section of US 1. Moreover, NCDOT is planning to finish 4-laning US 1 in Richmond County past NC 177 with a Rockingham bypass to the east. There are no plans from SCDOT to widen US 1 from the state line. From Henderson into Virginia, US 1 runs parallel with I-85 as a 2-lane local road until the state line, where Virginia hosts a continuous 3rd center lane for alternate passing towards US Highway 58 before South Hill.

Mid-Atlantic Region

In the Mid-Atlantic region, US 1 generally serves some of the most populated areas of the east coast. Through

, US 1 is paralleled by Interstates: the remainder of

to Petersburg,

through

and Fredericksburg to

Alexandria Alexandria ( or ; ar, ٱلْإِسْكَنْدَرِيَّةُ ; grc-gre, Αλεξάνδρεια, Alexándria) is the second largest city in Egypt, and the largest city on the Mediterranean coast. Founded in by Alexander the Great, Alexandria ...

, and

I-395 Interstate 395 may refer to: *Interstate 395 (Connecticut–Massachusetts), a spur from I-95 to Auburn, Massachusetts *Interstate 395 (Delaware), a proposed portion of I-95 in Delaware, when it was under construction *Interstate 395 (Florida), a spu ...

into Arlington. In much of Virginia, US 1 was called

by state law, although there are exceptions. South of Petersburg, it is known as Boydton Plank Road. Through some of

Fairfax County Fairfax County, officially the County of Fairfax, is a county in the Commonwealth of Virginia. It is part of Northern Virginia and borders both the city of Alexandria and Arlington County and forms part of the suburban ring of Washington, D.C. ...

and

, it is called Richmond Highway. In February 2021, Virginia renamed all remaining portions of Jefferson Davis Highway in the state to Emancipation Highway beginning on January 1, 2022. US 1 crosses the

Potomac River The Potomac River () drains the Mid-Atlantic United States, flowing from the Potomac Highlands into Chesapeake Bay. It is long,U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map. Retrieved Augus ...

with I-395 on the 14th Street Bridges, and splits to follow mainly 14th Street and

Rhode Island Avenue Rhode Island Avenue is a diagonal avenue in the Northwest and Northeast quadrants of Washington, D.C. and the capital's inner suburbs in Prince George's County, Maryland. Paralleling New York Avenue, Rhode Island Avenue was one of the original st ...

through the

District of Columbia ) , image_skyline = , image_caption = Clockwise from top left: the Washington Monument and Lincoln Memorial on the National Mall, United States Capitol, Logan Circle, Jefferson Memorial, White House, Adams Morgan, ...

. US 1 is at the minimum a 3 lane (with alternate passing) from the N.C. line to Petersburg with occasional 4 lane divided sections. North of Petersburg is a 4 lane undivided roadway at the minimum to the D.C. line. The route of US 1 from Petersburg to the state line is parallel with the

. From Petersburg onwards it is parallel with

. After exiting the District into

Maryland Maryland ( ) is a state in the Mid-Atlantic region of the United States. It shares borders with Virginia, West Virginia, and the District of Columbia to its south and west; Pennsylvania to its north; and Delaware and the Atlantic Ocean to ...

, US 1 follows the Baltimore-Washington Boulevard, the first of several modern highways built along the Baltimore-Washington corridor;

is the newest, after the Baltimore-Washington Parkway. US 1 runs through the

University of Maryland at College Park The University of Maryland, College Park (University of Maryland, UMD, or simply Maryland) is a public land-grant research university in College Park, Maryland. Founded in 1856, UMD is the flagship institution of the University System of Mary ...

campus in

College Park, Maryland College Park is a city in Prince George's County, Maryland, United States, and is approximately four miles (6.4 km) from the northeast border of Washington, D.C. The population was 34,740 at the 2020 United States Census. It is best known a ...

. The route bypasses

downtown Baltimore Downtown Baltimore is the central business district of the city of Baltimore traditionally bounded by Martin Luther King, Jr. Boulevard to the west, Franklin Street to the north, President Street to the east and the Inner Harbor area to the s ...

on North Avenue and exits the city to the northeast on Belair Road, gradually leaving the I-95 corridor, which passes through

Wilmington, Delaware Wilmington ( Lenape: ''Paxahakink /'' ''Pakehakink)'' is the largest city in the U.S. state of Delaware. The city was built on the site of Fort Christina, the first Swedish settlement in North America. It lies at the confluence of the Christina ...

, for a straighter path towards

. Around and beyond Bel Air, US 1 is a two-lane road, crossing the

Susquehanna River The Susquehanna River (; Lenape: Siskëwahane) is a major river located in the Mid-Atlantic region of the United States, overlapping between the lower Northeast and the Upland South. At long, it is the longest river on the East Coast of the ...

over the top of the

Conowingo Dam The Conowingo Dam (also Conowingo Hydroelectric Plant, Conowingo Hydroelectric Station) is a large hydroelectric dam in the lower Susquehanna River near the town of Conowingo, Maryland. The medium-height, masonry gravity dam is one of the larges ...

before entering Pennsylvania. (Routed further north, US 1 bypasses the state of

Delaware Delaware ( ) is a state in the Mid-Atlantic region of the United States, bordering Maryland to its south and west; Pennsylvania to its north; and New Jersey and the Atlantic Ocean to its east. The state takes its name from the adjacent Del ...

, unlike I-95.) The 2-lane US 1 becomes a 4-lane

expressway Expressway may refer to: * Controlled-access highway, the highest-grade type of highway with access ramps, lane markings, etc., for high-speed traffic. * Limited-access road, a lower grade of highway or arterial road. *Expressway, the fictional s ...

, officially known as the

John H. Ware III John Haines Ware III (August 29, 1908 – July 29, 1997) was an American politician who served as a Republican member of the U.S. House of Representatives for Pennsylvania's 9th congressional district from 1970 to 1973 and Pennsylvania's 5th cong ...

Memorial Highway, just after crossing into

Pennsylvania Pennsylvania (; ( Pennsylvania Dutch: )), officially the Commonwealth of Pennsylvania, is a state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States. It borders Delaware to its southeast, ...

. This bypass extends around

Oxford Oxford () is a city in England. It is the county town and only city of Oxfordshire. In 2020, its population was estimated at 151,584. It is north-west of London, south-east of Birmingham and north-east of Bristol. The city is home to the ...

and

Kennett Square Kennett Square is a borough in Chester County, Pennsylvania, United States. It is known as the Mushroom Capital of the World because mushroom farming in the region produces over 500 million pounds of mushrooms a year, totaling half of the United ...

, merging into the 4-lane divided

Baltimore Pike The Baltimore Pike was an auto trail connecting Baltimore, Maryland, with Philadelphia, Pennsylvania. Today, parts of the road are signed as U.S. Route 1 (US 1), US 13, and a small portion of Pennsylvania Route 41 (PA 41). A section of the road ...

just beyond the latter. At

Media Media may refer to: Communication * Media (communication), tools used to deliver information or data ** Advertising media, various media, content, buying and placement for advertising ** Broadcast media, communications delivered over mass el ...

, US 1 again becomes a freeway – the Media Bypass – ending just beyond

I-476 Interstate 476 (I-476) is a auxiliary Interstate Highway of I-76 in the U.S. state of Pennsylvania. The highway runs from I-95 near Chester north to I-81 near Scranton, serving as the primary north–south Interstate corridor through e ...

. After several name changes, the road becomes

City Avenue U.S. Route 1 (US 1) is a major north–south U.S. Highway, extending from Key West, Florida, in the south to Fort Kent, Maine, at the Canadian border in the north. In the U.S. state of Pennsylvania, US 1 runs for from the Maryland state line ...

, the western city limits of

, at the end of which a short

overlap Overlap may refer to: * In set theory, an overlap of elements shared between sets is called an intersection, as in a Venn diagram. * In music theory, overlap is a synonym for reinterpretation of a chord at the boundary of two musical phrases * Ove ...

with the

Schuylkill Expressway The Schuylkill Expressway , locally known as "the Schuylkill", is a Controlled-access highway, freeway through southern Montgomery County, Pennsylvania, Montgomery County and the city of Philadelphia in Philadelphia County, Pennsylvania, Philade ...

(

I-76 Interstate 76 may refer to: Interstate Highways in the United States * Interstate 76 (Colorado–Nebraska) * Interstate 76 (Ohio–New Jersey), running through Pennsylvania Video gaming * ''Interstate '76 ''Interstate '76'' is a vehicular c ...

) leads to the Roosevelt Expressway and then the 12-lane Roosevelt Boulevard partly overlapping US 13. US 1 again becomes a freeway after leaving the city, bypassing

Penndel Penndel is a borough in Bucks County, Pennsylvania, United States. The population was 2,328 at the 2010 census. Geography Penndel is located at (40.156109, -74.914050). According to the United States Census Bureau, the borough has a total area ...

and Morrisville and crossing the

Delaware River The Delaware River is a major river in the Mid-Atlantic (United States), Mid-Atlantic region of the United States. From the meeting of its branches in Hancock (village), New York, Hancock, New York, the river flows for along the borders of N ...

into

New Jersey New Jersey is a state in the Mid-Atlantic and Northeastern regions of the United States. It is bordered on the north and east by the state of New York; on the east, southeast, and south by the Atlantic Ocean; on the west by the Delaware ...

on the

Trenton–Morrisville Toll Bridge The Trenton–Morrisville Toll Bridge is one of three road bridges connecting Trenton, New Jersey with Morrisville, Pennsylvania. Opened on December 1, 1952, it carries U.S. Route 1 (US 1) and is owned and operated by the Delaware ...

. After crossing into

in Mercer County, US 1 continues on the

Trenton Freeway U.S. Route 1 (US 1) is a United States highway which parallels the East Coast of the United States, running from Key West, Florida in the south to Fort Kent, Maine at the Canadian border in the north. Of the entire length of the route, of it r ...

through the state capital of Trenton and Lawrence Township as a 4 lane freeway. As the freeway ends, the 4 lane

upgrades to 6 lanes north of

I-295 Interstate 295 is the designation for several Interstate Highways in the United States: *Interstate 295 (Delaware–Pennsylvania), a bypass of Philadelphia, Pennsylvania *Interstate 295 (Florida), a beltway around central Jacksonville *Interstate 29 ...

passing through the Penns Neck section of West Windsor Township. Through Penns Neck is a series of traffic signals. NJDOT is looking to revamp the highway through this area by replacing traffic signals with grade separations. The highway enters Middlesex County through Plainsboro and South Brunswick, where the highest point resides. By Forrestal Village, the highway downgrades from 6 to 4 lanes until after Finnegans Lane in North Brunswick. Northward, it continues through

New Brunswick New Brunswick (french: Nouveau-Brunswick, , locally ) is one of the thirteen provinces and territories of Canada. It is one of the three Maritime provinces and one of the four Atlantic provinces. It is the only province with both English and ...

as a short limited-access highway until the CR 529/Plainfield Avenue traffic signal in Edison. Through Edison and Woodbridge, US 1 has a mix of boulevard and limited-access segments and continues to do so after the US 9 juncture in the Avenel section of

Woodbridge Woodbridge may refer to: Places Australia *Woodbridge, Western Australia formerly called ''West Midland'' *Woodbridge, Tasmania Canada *Woodbridge, Ontario England *Woodbridge, Suffolk, the location of ** Woodbridge (UK Parliament constituency ...

. The US 1/9

concurrency Concurrent means happening at the same time. Concurrency, concurrent, or concurrence may refer to: Law * Concurrence, in jurisprudence, the need to prove both ''actus reus'' and ''mens rea'' * Concurring opinion (also called a "concurrence"), a ...

continues through the rest of the state. The 6 lane divided highway remains through

Rahway Rahway () is a city in southern Union County, in the U.S. state of New Jersey. A bedroom community of New York City, it is centrally located in the Rahway Valley region, in the New York metropolitan area. The city is southwest of Manhattan ...

in Union County and

Elizabeth Elizabeth or Elisabeth may refer to: People * Elizabeth (given name), a female given name (including people with that name) * Elizabeth (biblical figure), mother of John the Baptist Ships * HMS ''Elizabeth'', several ships * ''Elisabeth'' (sch ...

, until it reaches the

Newark Airport Newark Liberty International Airport , originally Newark Metropolitan Airport and later Newark International Airport, is an international airport straddling the boundary between the cities of Newark in Essex County and Elizabeth in Union Count ...

, where it becomes a dual carriageway freeway around downtown

Newark Newark most commonly refers to: * Newark, New Jersey, city in the United States * Newark Liberty International Airport, New Jersey; a major air hub in the New York metropolitan area Newark may also refer to: Places Canada * Niagara-on-the ...

in Essex County with a 2-2-2-2 configuration. The historic

Pulaski Skyway The Pulaski Skyway is a four-lane bridge-causeway in the Gateway Region, northeastern part of the U.S. state of New Jersey, carrying an freeway, expressway designated U.S. Route 1/9 (US 1/9) for most of its length. The structure has a ...

takes US 1/9 into

Jersey City Jersey City is the second-most populous city in the U.S. state of New Jersey, after Newark.Tonnele Circle The Tonnele Circle is an intersection in Jersey City, New Jersey, United States. It is named after Tonnele TUN-uh-lee"Avenue, the north–south road that runs through it. Entrances and exits Entrances to and exits from Tonnele Circle are lis ...

to head north into

Bergen County Bergen County is the most populous county in the U.S. state of New Jersey.US 46 as a limited-access highway, and the three routes run northeast to the

George Washington Bridge Plaza The George Washington Bridge Plaza, also known as GWB Plaza or Bridge Plaza, is the convergence of roads and highways around the George Washington Bridge toll plaza in Fort Lee, New Jersey, United States. The plaza is located north of and para ...

, where they merge into

. US 46 ends in the middle of the bridge, which crosses the

Hudson River The Hudson River is a river that flows from north to south primarily through eastern New York. It originates in the Adirondack Mountains of Upstate New York and flows southward through the Hudson Valley to the New York Harbor between N ...

into

New York New York most commonly refers to: * New York City, the most populous city in the United States, located in the state of New York * New York (state), a state in the northeastern United States New York may also refer to: Film and television * '' ...

, and US 9 exits just beyond onto

Broadway Broadway may refer to: Theatre * Broadway Theatre (disambiguation) * Broadway theatre, theatrical productions in professional theatres near Broadway, Manhattan, New York City, U.S. ** Broadway (Manhattan), the street **Broadway Theatre (53rd Stree ...

Manhattan Manhattan (), known regionally as the City, is the most densely populated and geographically smallest of the five boroughs of New York City. The borough is also coextensive with New York County, one of the original counties of the U.S. state ...

, but US 1 stays with

onto the

Cross Bronx Expressway The Cross Bronx Expressway is a major freeway in the New York City borough of the Bronx. It is mainly designated as part of Interstate 95 (I-95), but also includes portions of I-295 and U.S. Route 1 (US 1). The Cross Bronx begins ...

, exiting in

the Bronx The Bronx () is a borough of New York City, coextensive with Bronx County, in the state of New York. It is south of Westchester County; north and east of the New York City borough of Manhattan, across the Harlem River; and north of the New Y ...

onto Webster Avenue. Two turns take US 1 via

Fordham Road Fordham Road is a major thoroughfare in the Bronx, New York City, that runs west-east from the Harlem River to Bronx Park. Fordham Road houses the borough's largest and most diverse shopping district. It geographically separates the North Bron ...

to Boston Road, which it follows northeast out of the city, becoming Boston Post Road in Westchester County, never straying far from I-95. From the

Bronx The Bronx () is a borough of New York City, coextensive with Bronx County, in the state of New York. It is south of Westchester County; north and east of the New York City borough of Manhattan, across the Harlem River; and north of the New Y ...

to the state line, it is a local road with two lanes in each direction, except in

Rye Rye (''Secale cereale'') is a grass grown extensively as a grain, a cover crop and a forage crop. It is a member of the wheat tribe (Triticeae) and is closely related to both wheat (''Triticum'') and barley (genus ''Hordeum''). Rye grain is u ...

where it has a single lane in each direction. As it enters Greenwich, Connecticut, it continues as a 2-lane local road.

New England

, US 1 generally serves large cities in a side street capacity. In

Connecticut Connecticut () is the southernmost state in the New England region of the Northeastern United States. It is bordered by Rhode Island to the east, Massachusetts to the north, New York to the west, and Long Island Sound to the south. Its cap ...

, US 1 serves the shore of the

Long Island Sound Long Island Sound is a marine sound and tidal estuary of the Atlantic Ocean. It lies predominantly between the U.S. state of Connecticut to the north and Long Island in New York to the south. From west to east, the sound stretches from the Eas ...

parallel to

. Beyond

New Haven New Haven is a city in the U.S. state of Connecticut. It is located on New Haven Harbor on the northern shore of Long Island Sound in New Haven County, Connecticut and is part of the New York City metropolitan area. With a population of 134,02 ...

, the highway travels east–west, and some signs in the state indicate this rather than the standard north–south. While

Rhode Island Rhode Island (, like ''road'') is a U.S. state, state in the New England region of the Northeastern United States. It is the List of U.S. states by area, smallest U.S. state by area and the List of states and territories of the United States ...

takes a diagonal path to

Providence Providence often refers to: * Providentia, the divine personification of foresight in ancient Roman religion * Divine providence, divinely ordained events and outcomes in Christianity * Providence, Rhode Island, the capital of Rhode Island in the ...

, US 1 continues east along the coast through Westerly to

Wakefield Wakefield is a cathedral city in West Yorkshire, England located on the River Calder. The city had a population of 99,251 in the 2011 census.https://www.nomisweb.co.uk/census/2011/ks101ew Census 2011 table KS101EW Usual resident population, ...

, where it turns north and follows

Narragansett Bay Narragansett Bay is a bay and estuary on the north side of Rhode Island Sound covering , of which is in Rhode Island. The bay forms New England's largest estuary, which functions as an expansive natural harbor and includes a small archipelago. Sma ...

. Most of this part is a four-lane

limited access highway A limited-access road, known by various terms worldwide, including limited-access highway, dual-carriageway, expressway, limited access freeway, and partial controlled access highway, is a highway or arterial road for high-speed traffic which ...

, providing access to Route 138 towards Newport. After

Route 4 Route 4, or Highway 4, may refer to several highways in the following countries: International * AH4, Asian Highway 4 * European route E04 * European route E004 * Cairo – Cape Town Highway Albania * SH-4 road in Albania from Durres to Kakav ...

splits as a mostly-

freeway A controlled-access highway is a type of highway that has been designed for high-speed vehicular traffic, with all traffic flow—ingress and egress—regulated. Common English terms are freeway, motorway and expressway. Other similar terms ...

connection to I-95, US 1 becomes a lower-speed surface road, passing through

Warwick Warwick ( ) is a market town, civil parish and the county town of Warwickshire in the Warwick District in England, adjacent to the River Avon. It is south of Coventry, and south-east of Birmingham. It is adjoined with Leamington Spa and Whi ...

, Providence, and Pawtucket. The route parallels

again through Providence and Pawtucket and into

Massachusetts Massachusetts (Massachusett language, Massachusett: ''Muhsachuweesut assachusett writing systems, məhswatʃəwiːsət'' English: , ), officially the Commonwealth of Massachusetts, is the most populous U.S. state, state in the New England ...

, traveling towards

as a four-lane road. When it reaches Dedham, US 1 turns east and becomes a freeway through metropolitan

concurrent Concurrent means happening at the same time. Concurrency, concurrent, or concurrence may refer to: Law * Concurrence, in jurisprudence, the need to prove both ''actus reus'' and ''mens rea'' * Concurring opinion (also called a "concurrence"), a ...

with

and

I-93 Interstate 93 (I-93) is an Interstate Highway in the New England states of Massachusetts, New Hampshire, and Vermont in the United States. Spanning approximately along a north–south axis, it is one of three primary Interstate Highways ...

east to Braintree and north through

Downtown Boston Downtown Boston is the central business district of Boston, Massachusetts, United States. The city of Boston was founded in 1630. The largest of the city's commercial districts, Downtown is the location of many corporate or regional headquarters; ...

. The

Tobin Bridge The Maurice J. Tobin Memorial Bridge (formerly the Mystic River Bridge) is a cantilever truss bridge that spans more than two miles (3 km) from Boston to Chelsea over the Mystic River in Massachusetts. The bridge is the largest in New Eng ...

and Northeast Expressway take US 1 out of Boston, after which it again parallels I-95 as a high-speed surface road through

Newburyport Newburyport is a coastal city in Essex County, Massachusetts, United States, northeast of Boston. The population was 18,289 at the 2020 census. A historic seaport with vibrant tourism industry, Newburyport includes part of Plum Island. The mo ...

to the New Hampshire state line. The short portion of US 1 in

New Hampshire New Hampshire is a U.S. state, state in the New England region of the northeastern United States. It is bordered by Massachusetts to the south, Vermont to the west, Maine and the Gulf of Maine to the east, and the Canadian province of Quebec t ...

follows the historic Lafayette Road, staying close to

, passing through

Portsmouth Portsmouth ( ) is a port and city in the ceremonial county of Hampshire in southern England. The city of Portsmouth has been a unitary authority since 1 April 1997 and is administered by Portsmouth City Council. Portsmouth is the most dens ...

before crossing the

Piscataqua River The Piscataqua River (Abenaki: ''Pskehtekwis'') is a tidal river forming the boundary of the U.S. states of New Hampshire and Maine from its origin at the confluence of the Salmon Falls River and Cochecho River. The drainage basin of the river ...

on Memorial Bridge, which was demolished and replaced during 2012–13, leaving a temporary gap in US 1. During construction, drivers had to detour to one of two other nearby bridges carrying U.S. Route 1 Bypass or

. Within

Maine Maine () is a state in the New England and Northeastern regions of the United States. It borders New Hampshire to the west, the Gulf of Maine to the southeast, and the Canadian provinces of New Brunswick and Quebec to the northeast and north ...

, US 1 begins as a parallel route to

near the

. At

Portland Portland most commonly refers to: * Portland, Oregon, the largest city in the state of Oregon, in the Pacific Northwest region of the United States * Portland, Maine, the largest city in the state of Maine, in the New England region of the northeas ...

, I-95 splits off to the north, and

heads northeast paralleling US 1 to Brunswick. There US 1 turns east as a mostly two-lane road along the coast to

Calais Calais ( , , traditionally , ) is a port city in the Pas-de-Calais department, of which it is a subprefecture. Although Calais is by far the largest city in Pas-de-Calais, the department's prefecture is its third-largest city of Arras. Th ...

; much of this portion is advertised as the "Coastal Route" on signs. North from Calais, US 1 follows the Canada–US border, crossing I-95 in Houlton and eventually turning west and southwest to its "north" end at the Clair-Fort Kent Bridge in Fort Kent. The short Route 161 extends north on the

(Canada) side of the bridge to Route 120, a secondary east–west route from

Edmundston Edmundston is a city in Madawaska County, New Brunswick, Canada. On 1 January 2023, Edmundston will expanded, annexing the village of Rivière-Verte and parts of the local service districts of the parish of Saint-Jacques and the parish of Sai ...

west to

Quebec Route 289 Route 289 is a two-lane north/south highway on the south shore of the Saint Lawrence River in the Bas-Saint-Laurent region of eastern Quebec, Canada. Its northern terminus is in Saint-André-de-Kamouraska at the junction of Route 132 and the sout ...

toward

Saint-Alexandre, Quebec Saint-Alexandre is a municipality in the province of Quebec, Canada, located in the Regional County Municipality of Le Haut-Richelieu. The population as of the Canada 2011 Census was 2,495. Residents of Saint-Alexandre are called ''Alexandrins' ...

History

The direct predecessor to US 1 was the Atlantic Highway, an

auto trail The system of auto trails was an informal network of marked routes that existed in the United States and Canada in the early part of the 20th century. Marked with colored bands on utility poles, the trails were intended to help travellers in ...

established in 1911 as the Quebec-Miami International Highway. In 1915, it was renamed the Atlantic Highway, and the northern terminus was changed to

Calais, Maine Calais is a city in Washington County, Maine, United States. As of the 2020 census, it had a population of 3,079, making Calais the third least-populous city in Maine (after Hallowell and Eastport). The city has three Canada–US border cro ...

. Due to the overlapping of auto trail designations, portions of the route had other names that remain in common use, such as the

Boston Post Road The Boston Post Road was a system of mail-delivery routes between New York City and Boston, Massachusetts that evolved into one of the first major highways in the United States. The three major alignments were the Lower Post Road (now U.S. Ro ...

between

and

, the

Lincoln Highway The Lincoln Highway is the first transcontinental highway in the United States and one of the first highways designed expressly for automobiles. Conceived in 1912 by Indiana entrepreneur Carl G. Fisher, and formally dedicated October 31, 1913 ...

between New York and

, Baltimore Pike between Philadelphia and

, and the

Dixie Highway Dixie Highway was a United States auto trail first planned in 1914 to connect the Midwest with the South. It was part of a system and was expanded from an earlier Miami to Montreal highway. The final system is better understood as a network of ...

in and south of eastern

. North of

, the highway generally followed the Eastern U.S. Fall Line, rather than a more easterly route through the

swamp A swamp is a forested wetland.Keddy, P.A. 2010. Wetland Ecology: Principles and Conservation (2nd edition). Cambridge University Press, Cambridge, UK. 497 p. Swamps are considered to be transition zones because both land and water play a role in ...

s of the

Brickell Avenue Brickell Avenue is a north–south road that was formerly part of U.S. Route 1, in Miami, Florida, just south of the Miami River. North of the Brickell Avenue Bridge, U.S. Route 1 is known as Biscayne Boulevard. Brickell Avenue is the main road ...

is the name given to the stretch of US 1 in

Miami, Florida Miami ( ), officially the City of Miami, known as "the 305", "The Magic City", and "Gateway to the Americas", is a East Coast of the United States, coastal metropolis and the County seat, county seat of Miami-Dade County, Florida, Miami-Dade C ...

, just south of the Miami River until the

Rickenbacker Causeway The Rickenbacker Causeway is a causeway that connects Miami, Florida to the barrier islands of Virginia Key and Key Biscayne across Biscayne Bay. Background The Causeway is a toll road, owned and operated by Miami-Dade County. Automobiles tr ...

. When the

New England road marking system , , , , , The New England road marking system was a regional system of marked numbered routes in the six-state region of New England in the United States. The routes were marked by a yellow rectangular sign with black numbers and border. M ...

was established in 1922, the Atlantic Highway within

was signed as Route 1, with a Route 24 continuing north to Madawaska;

extended the number to

in 1924 with its own Route 1. Other states adopted their own systems of numbering; by 1926 all states but

had signed the Atlantic Highway as various routes, usually changing numbers at the state line. In 1925, the

Joint Board on Interstate Highways The United States Numbered Highway System (often called U.S. Routes or U.S. Highways) is an integrated network of roads and highways numbered within a nationwide grid in the contiguous United States. As the designation and numbering of these h ...

created a preliminary list of interstate routes to be marked by the states, including US 1 along the Atlantic. This highway began at

and followed the existing Route 24 to Houlton, as well as Route 15 to Bangor, beyond which it generally followed the Atlantic Highway to Miami. In all states but

that had numbered their

state highway A state highway, state road, or state route (and the equivalent provincial highway, provincial road, or provincial route) is usually a road that is either ''numbered'' or ''maintained'' by a sub-national state or province. A road numbered by a ...

s, Route 1 followed only 1 or 2 numbers across the state.The following routes were used, shown on the 1926 Rand McNally: *Florida: 4 *Georgia: 15, 17, and 24 *South Carolina: 12 and 50 *North Carolina: 50 *Virginia: 31 *Maryland: state highways were not numbered prior to the U.S. Highway system *Pennsylvania: 12 and 1 *New Jersey: 13 and 1 *New York: 1 *New England: 1 and 24, and a small piece of 160 beyond

Madawaska, Maine Madawaska is a New England town, town in Aroostook County, Maine, Aroostook County, Maine, United States. The population was 3,867 at the 2020 United States Census, 2020 census. Madawaska is opposite Edmundston, Madawaska County, New Brunswick, M ...

(in the 1925 plan, part of 15 was also used) The only significant deviation from the Atlantic Highway was between

, and

, where Route 1 was assigned to a more inland route, rather than following the Atlantic Highway via

Savannah A savanna or savannah is a mixed woodland-grassland (i.e. grassy woodland) ecosystem characterised by the trees being sufficiently widely spaced so that the Canopy (forest), canopy does not close. The open canopy allows sufficient light to rea ...

. One of the many changes made to the system before the final numbering was adopted in 1926 involved US 1 in Maine. The 1925 plan had assigned US 1 to the shorter inland route (Route 15) between Houlton and Bangor, while US 2 followed the longer coastal route via Calais. In the system as adopted in 1926, US 2 instead took the inland route, while US 1 followed the coast, absorbing all of the former Routes 24 and 1 in New England. Many local and regional relocations, often onto parallel superhighways, were made in the early days of US 1; this included the four-lane divided Route 25 in

, completed in 1932 with the opening of the

, and a bypass of Bangor involving the Waldo-Hancock Bridge, opened in 1931. The

from Miami to

was completed in 1938, and soon became a southern extension of US 1. With the construction of the

Interstate Highway System The Dwight D. Eisenhower National System of Interstate and Defense Highways, commonly known as the Interstate Highway System, is a network of controlled-access highways that forms part of the National Highway System in the United States. Th ...

in and after the 1950s, much of US 1 from Houlton to Miami was bypassed by

. Between Houlton and

Brunswick, Maine Brunswick is a town in Cumberland County, Maine, United States. The population was 21,756 at the 2020 United States Census. Part of the Portland-South Portland-Biddeford metropolitan area, Brunswick is home to Bowdoin College, the Bowdoin Intern ...

, I-95 took a shorter inland route, much of it paralleling US 2 on the alignment proposed for US 1 in 1925. Between

and

, I-95 leaves US 1 to pass through Wilmington. Most notably, I-95 and US 1 follow different corridors between

, and

; while US 1 followed the Fall Line west of the coastal plain, I-95 takes a more direct route through the plain and its swamps. Although some of this part of US 1 was followed by other Interstates—

between Petersburg and

Henderson, North Carolina Henderson is a city and the county seat of Vance County, North Carolina, United States. The population was 15,060 at the 2020 census. History The city was named in honor of former North Carolina Supreme Court Chief Justice Leonard Henderson, w ...

, and

between

Camden, South Carolina Camden is the largest city and county seat of Kershaw County, South Carolina. The population was 7,764 in the 2020 census. It is part of the Columbia, South Carolina, Metropolitan Statistical Area. Camden is the oldest inland city in South Caro ...

and

—the rest remains an independent route with four lanes in many places. By the late 1970s, most of I-95 had been completed, replacing US 1 as the main corridor of the east coast and relegating most of it to local road status.

Major intersections

;Florida : Whitehead Street and Fleming Street in

: in

: in Miami : in Miami : in Miami : in Miami : on the Dania Beach–

Fort Lauderdale, Florida Fort Lauderdale () is a coastal city located in the U.S. state of Florida, north of Miami along the Atlantic Ocean. It is the county seat of and largest city in Broward County with a population of 182,760 at the 2020 census, making it the tenth ...

city line : in

: in

Ormond Beach Ormond Beach is a city in central Florida in Volusia County. The population was 43,080 at the 2020 census. Ormond Beach lies directly north of Daytona Beach and is a principal city of the Deltona–Daytona Beach–Ormond Beach, FL Metropolitan ...

: near

: in

: in Jacksonville : in Jacksonville. The highways travel concurrently through the city. : in Jacksonville. The highways travel concurrently through the city. : in Jacksonville. The highways travel concurrently through the city. : in Jacksonville : in Jacksonville : in Jacksonville. The highways travel concurrently to north of

Alma, Georgia Bacon County Courthouse Alma is a city in Bacon County, Georgia, United States, and the county seat. As of the 2020 census, the city had a population of 3,433. Alma is known as Georgia's blueberry capital, and hosts a Blueberry Festival each ...

. : in Jacksonville : in

Callahan Callahan may refer to: *Callahan (surname) Fictional characters *Father Callahan, in Stephen King novels *Harry Callahan (character), in ''Dirty Harry'' movies * Jack Callahan (''Neighbours''), from the Australian soap opera ''Neighbours'' *Mik ...

. The highways travel concurrently to

Homeland, Georgia Homeland is a city in Charlton County, Georgia, United States. The population was 910 at the 2010 census. History Homeland was founded in 1906. Geography Homeland is located in southeastern Georgia at (30.859445, -82.022074). It is bordered to ...

. ;Georgia : in Waycross. US 1/US 82/SR 520 travels concurrently to west of Deenwood. : in Waycross. The highways travel concurrently through the city. : in Baxley : in

: in Oak Park : in

: in Wadley : in

Louisville Louisville ( , , ) is the largest city in the Commonwealth of Kentucky and the 28th most-populous city in the United States. Louisville is the historical seat and, since 2003, the nominal seat of Jefferson County, on the Indiana border. ...

. US 1/US 221 travels concurrently to

Wrens Wrens are a family of brown passerine birds in the predominantly New World family Troglodytidae. The family includes 88 species divided into 19 genera. Only the Eurasian wren occurs in the Old World, where, in Anglophone regions, it is common ...

. : in Augusta : in Augusta. US 1/US 78 travels concurrently to

Aiken, South Carolina Aiken is the largest city in, and the county seat of, Aiken County, in western South Carolina. It is one of the two largest cities of the Central Savannah River Area. Founded in 1835, Aiken was named after William Aiken, the president of the Sout ...

. US 1/US 278 travels concurrently to

Clearwater, South Carolina Clearwater is a census-designated place (CDP) in Aiken County, South Carolina. It lies near North Augusta, South Carolina, and is part of the Augusta, Georgia metropolitan area. Clearwater is located in historic Horse Creek Valley. The population ...

. US 1/SR 10 travels concurrently to the

state line. : in Augusta. US 1/US 25 travels concurrently to

North Augusta, South Carolina North Augusta is a city in Aiken and Edgefield counties in the U.S. state of South Carolina, on the north bank of the Savannah River. The population was 21,348 at the 2010 census. The city is included in the Central Savannah River Area (CSRA) ...

. US 1/SR 121 travels concurrently to the South Carolina state line. ;South Carolina : in North Augusta : north-northeast of Aiken : in

Batesburg-Leesville Batesburg-Leesville is a town located in Lexington and Saluda counties, South Carolina, United States. The town's population was 5,362 as of the 2010 census and an estimated 5,415 in 2019. History The town of Batesburg-Leesville was formed in ...

: in Lexington. The highways travel concurrently through the city. : east of Lexington : in Oak Grove : in West Columbia. The highways travel concurrently to Columbia. : in Columbia : in Columbia. The highways travel concurrently through the city. : in Dentsville : in Dentsville : in Lugoff. The highways travel concurrently to Camden. : in Camden : south-southwest of

. The highways travel concurrently to Cheraw. ;North Carolina : west-southwest of East Rockingham : in Rockingham : in

Aberdeen Aberdeen (; sco, Aiberdeen ; gd, Obar Dheathain ; la, Aberdonia) is a city in North East Scotland, and is the third most populous city in the country. Aberdeen is one of Scotland's 32 local government council areas (as Aberdeen City), and ...

. The highways travel concurrently through the city. : north-northeast of

. The highways travel concurrently to Sanford. : in Sanford : in

. The highways travel concurrently to

. : in

. I-440/US 1 travels concurrently through the city. : in Raleigh : in Raleigh. US 1/US 401 travel concurrently through the city. : near Raleigh : northeast of

. The highways travel concurrently to Norlina. : southwest of Middleburg : in Middleburg. US 1/US 401 travels concurrently to north-northwest of Wise. : north-northwest of Wise ;Virginia : southwest of South Hill. The highways travel concurrently to just southwest of the city. : in South Hill : south of

Alberta Alberta ( ) is one of the thirteen provinces and territories of Canada. It is part of Western Canada and is one of the three prairie provinces. Alberta is bordered by British Columbia to the west, Saskatchewan to the east, the Northwest Ter ...

: southwest of Petersburg. US 1/US 460 Bus. travels concurrently to Petersburg. : in Petersburg. The highways travel concurrently to

. : in

: in Richmond : in Richmond : in Richmond : in

Lakeside Lakeside or Lake Side may refer to: Places Australia * Lakeside College, Pakenham, Victoria * Lakeside Joondalup Shopping City, Joondalup, Western Australia * Lakeside, near Reservoir, Victoria * Lakeside International Raceway, Pine Rivers, Quee ...

: in Glen Allen : east-northeast of Spotsylvania. The highways travel concurrently to south of Fredericksburg. : south of Fredericksburg : in Lorton : in

: in Arlington. The highways travel concurrently to

;District of Columbia : in

Washington Washington commonly refers to: * Washington (state), United States * Washington, D.C., the capital of the United States ** A metonym for the federal government of the United States ** Washington metropolitan area, the metropolitan area centered on ...

The highways travel concurrently through part of the city. : in

The two highways bump into each other at the intersection of 6th Street NW and

Rhode Island Avenue NW Rhode Island Avenue is a diagonal avenue in the Northwest and Northeast quadrants of Washington, D.C. and the capital's inner suburbs in Prince George's County, Maryland. Paralleling New York Avenue, Rhode Island Avenue was one of the original ...

. ;Maryland : in College Park : in Elkridge : in

Arbutus ''Arbutus'' is a genus of 12 accepted speciesAct. Bot. Mex no.99 Pátzcuaro abr. 2012.''Arbutus bicolor''/ref> of flowering plants in the family Ericaceae, native to warm temperate regions of the Mediterranean, western Europe, the Canary Islan ...

: in

: in Baltimore : in Overlea : in Conowingo ;Pennsylvania : in Concordville. US 1/US 322 travels concurrently through the community. : in

Marple Township Marple Township is a township in Delaware County, Pennsylvania, United States. It contains the census designated place of Broomall. The population was 23,743 at 2015. ZIP codes include mainly 19008, but also partially 19064 and 19063. The towns ...

: on the Wynnewood–

city line : on the

Bala Cynwyd Bala Cynwyd ( ) is a community in Lower Merion Township, Pennsylvania. It is located on the Philadelphia Main Line in Southeastern Pennsylvania, bordering the western edge of Philadelphia at U.S. Route 1 (City Avenue). It was originally two separa ...

–Philadelphia city line. The highways travel concurrently into Philadelphia proper. : in Philadelphia. The highways travel concurrently through part of the city. : in Bensalem : in Woodbourne : southwest of Morrisville ;New Jersey : in Lawrence Township : in

North Brunswick North Brunswick is a Township (New Jersey), township in Middlesex County, New Jersey, Middlesex County, New Jersey, United States. It is centrally located in the Raritan River, Raritan Valley region within the New York Metropolitan area. At the ...

: on the

Edison Thomas Alva Edison (February 11, 1847October 18, 1931) was an American inventor and businessman. He developed many devices in fields such as electric power generation, mass communication, sound recording, and motion pictures. These invention ...

–

Metuchen Metuchen ( ) is a suburban Borough (New Jersey), borough in Middlesex County, New Jersey, Middlesex County, New Jersey, United States. The borough is a commuter town of New York City, located in the heart of the Raritan River, Raritan Valley reg ...

city line : in Woodbridge Township. The highways travel concurrently to

. : in Linden : in

: in Newark : in Newark : in Newark : in Palisades Park. The highways travel concurrently to the

state line at the

George Washington Bridge The George Washington Bridge is a double-decked suspension bridge spanning the Hudson River, connecting Fort Lee, New Jersey, with Manhattan in New York City. The bridge is named after George Washington, the first president of the United St ...

. : in Fort Lee : in Fort Lee. The highways travel concurrently to

The Bronx The Bronx () is a borough of New York City, coextensive with Bronx County, in the state of New York. It is south of Westchester County; north and east of the New York City borough of Manhattan, across the Harlem River; and north of the New Y ...

. : at the New Jersey–New York state line ;New York : in

: in

, New York City : in The Bronx, New York City : in

New Rochelle New Rochelle (; older french: La Nouvelle-Rochelle) is a city in Westchester County, New York, United States, in the southeastern portion of the state. In 2020, the city had a population of 79,726, making it the seventh-largest in the state of ...

: in

: on the Rye–

Port Chester Port Chester is a village in the U.S. state of New York and the largest part of the town of Rye in Westchester County by population. At the 2010 U.S. census, the village of Port Chester had a population of 28,967 and was the fifth-most popul ...

city line ;Connecticut : in Stamford : in Darien : in Norwalk : in Fairfield : in Fairfield : in Fairfield : in Stratford : in

Milford Milford may refer to: Place names Canada * Milford (Annapolis), Nova Scotia * Milford (Halifax), Nova Scotia * Milford, Ontario England * Milford, Derbyshire * Milford, Devon, a place in Devon * Milford on Sea, Hampshire * Milford, Shro ...

: in

: in East Haven : in Branford : in

Guilford Guildford is a town in Surrey, England. It gives its name to the Borough of Guildford, the Diocese of Guildford and the Parliamentary constituency of Guildford. Guildford, Guilford, or Gildford may also refer to: Places Australia * Guildfor ...

: in

Old Saybrook Old Saybrook is a town in Middlesex County, Connecticut, United States. The population was 10,481 at the 2020 census. It contains the incorporated borough of Fenwick, as well as the census-designated places of Old Saybrook Center and Saybro ...

. The highways travel concurrently to

Old Lyme Old Lyme is a coastal town in New London County, Connecticut, United States. The main street of the town, Lyme Street, is a historic district with several homes once owned by sea captains. Lyme Academy of Fine Arts is located in Old Lyme and ther ...

. : in

East Lyme East Lyme is a town in New London County, Connecticut, United States. The population was 18,693 at the 2020 census. The villages of Niantic and Flanders are located in the town. Geography East Lyme is located in southern New London County, west ...

: in

New London New London may refer to: Places United States *New London, Alabama *New London, Connecticut *New London, Indiana *New London, Iowa * New London, Maryland *New London, Minnesota *New London, Missouri *New London, New Hampshire, a New England town * ...

. The highways travel concurrently to Groton. ;Rhode Island : in

: in

. The highways travel concurrently for one block. : in Pawtucket. The highways travel concurrently for less than . ;Massachusetts : in

Attleboro Attleboro is a city in Bristol County, Massachusetts, United States. It was once known as "The Jewelry Capital of the World" for its many jewelry manufacturers. According to the 2020 census, Attleboro had a population of 46,461. Attleboro is ...

: in

North Attleborough North Attleborough, alternatively spelled North Attleboro, is a town in Bristol County, Massachusetts, United States. The population was 30,834 at the 2020 United States Census. The villages of Attleboro Falls and North Attleborough Center are ...

: in Plainville : in

Sharon Sharon ( he, שָׁרוֹן ''Šārôn'' "plain") is a given name as well as an Israeli surname. In English-speaking areas, Sharon is now predominantly a feminine given name. However, historically it was also used as a masculine given name. In I ...

: on the Westwood– Dedham city line. The highways travel concurrently to

Canton Canton may refer to: Administrative division terminology * Canton (administrative division), territorial/administrative division in some countries, notably Switzerland * Township (Canada), known as ''canton'' in Canadian French Arts and ent ...

. : in

. I-93/US 1 travels concurrently to

. : in Boston : in Boston : in Peabody : in Peabody : in Danvers ;New Hampshire : in

;Maine : in

Kittery Kittery is a town in York County, Maine, United States. Home to the Portsmouth Naval Shipyard on Seavey's Island, Kittery includes Badger's Island, the seaside district of Kittery Point, and part of the Isles of Shoals. The southernmost town in t ...

: in Saco : in South Portland. The highways travel concurrently to

. : in Portland : in Falmouth : in

Yarmouth Yarmouth may refer to: Places Canada *Yarmouth County, Nova Scotia **Yarmouth, Nova Scotia **Municipality of the District of Yarmouth **Yarmouth (provincial electoral district) **Yarmouth (electoral district) * Yarmouth Township, Ontario *New ...

: in Yarmouth : in

Freeport Freeport, a variant of free port, may refer to: Places United States *Freeport, California *Freeport, Florida *Freeport, Illinois *Freeport, Indiana *Freeport, Iowa *Freeport, Kansas *Freeport, Maine, a New England town **Freeport (CDP), Maine, the ...

: in Brunswick : in Brunswick : in Houlton. The highways travel concurrently through the city. : in Houlton : at the Fort Kent–Clair Border Crossing in Fort Kent

Auxiliary routes

US 1 has six three-digit auxiliary routes. In numerical order, these are: * US 201, from

, to the

Armstrong–Jackman Border Crossing The Armstrong–Jackman Border Crossing is a border crossing on the Canada–United States border, located southeast of Saint-Théophile, Québec, and northwest of Jackman, Maine. The border crossing is the northern terminus of U.S. Route 201, whi ...

running south to north in east-central

. * US 301, from

Sarasota, Florida Sarasota () is a city in Sarasota County on the Gulf Coast of the U.S. state of Florida. The area is renowned for its cultural and environmental amenities, beaches, resorts, and the Sarasota School of Architecture. The city is located in the sout ...

, to

Biddles Corner, Delaware Biddles Corner is a location in St. George's Hundred, New Castle County, Delaware, United States. Biddles Corner is at the intersection of U.S. Route 13 and Port Penn Road just east of the Biddles Corner toll plaza on the Delaware Route 1 toll ro ...

, along the Eastern Seaboard. The route closely parallels

for most of its route and has numerous intersections with its parent. * US 401 from

Sumter, South Carolina Sumter ( ) is a city in and the county seat of Sumter County, South Carolina, United States. Known as the Sumter Metropolitan Statistical Area, the namesake county adjoins Clarendon and Lee to form the core of Sumter-Lee-Clarendon Tri-county (o ...

, to

Wise, North Carolina Wise is a small unincorporated community located on U.S. Route 1 in Warren County, North Carolina, United States. The nearest town is Norlina. The Warren County Training School was listed on the National Register of Historic Places The N ...

, near the Virginia border. For most of the route, it parallels US 1 about to the east, though the two share pavement in

Raleigh, North Carolina Raleigh (; ) is the capital city of the state of North Carolina and the List of North Carolina county seats, seat of Wake County, North Carolina, Wake County in the United States. It is the List of municipalities in North Carolina, second-most ...

. * US 501 from

Myrtle Beach, South Carolina Myrtle Beach is a resort city on the east coast of the United States in Horry County, South Carolina. It is located in the center of a long and continuous stretch of beach known as "The Grand Strand" in the northeastern part of the state. Its y ...

, to

Buena Vista, Virginia Buena Vista ( ) is an independent city (United States), independent city located in the Blue Ridge Mountains region of Virginia in the United States. As of the 2020 United States Census, 2020 census, the population was 6,641. The Bureau of Econ ...

. The highway runs southeast-to-northwest, meeting its parent in

and Sanford. * US 601 from

Tarboro, South Carolina Tarboro is an unincorporated community located in Jasper County, South Carolina )''Animis opibusque parati'' ( for, , Latin, Prepared in mind and resources, links=no) , anthem = " Carolina";" South Carolina On My Mind" , Former = Province of S ...

, to

Mount Airy, North Carolina Mount Airy is a city in Surry County, North Carolina, United States. As of the 2020 census, the city population was 10,611. History Mount Airy was settled in the 1750s as a stagecoach stop on the road between Winston-Salem, North Carolina an ...

. It runs mostly due south-to-north to the west of US 501, meeting the parent route in

. * US 701 from

Georgetown, South Carolina Georgetown is the third oldest city in the U.S. state of South Carolina and the county seat of Georgetown County, South Carolina, Georgetown County, in the South Carolina Lowcountry, Lowcountry. As of the 2010 United States Census, 2010 census ...

, to

Four Oaks, North Carolina Four Oaks is a town in Johnston County, North Carolina, Johnston County, North Carolina, United States. As of the 2010 United States Census, 2010 census it had a population of 1,921, up from 1,424 in 2000. History Four Oaks was one of several town ...

. Furthest east of the US 1 auxiliary routes, it never meets its parent route, but does intersect US 501 in

Conway, South Carolina Conway is a city in Horry County, South Carolina, United States. The population was 24,849 at the 2020 census, up from 17,103 in 2010 census. It is the county seat of Horry County and is part of the Myrtle Beach metropolitan area. It is the home ...

, and terminates at US 301 at its northern end. US 101, despite its number, is not an auxiliary route, but rather considered a primary U.S. Route in its own right as major highway west of the former US 99 on the west coast of the United States. (In the numbering scheme, its first "digit" is "10".)

Related state highways

Massachusetts Route 1A Route 1A is a north–south state highway in Massachusetts. It is an alternate route to U.S. 1 with three signed sections and two unsigned sections where the highway is concurrent with its parent. Due to the reconfiguration of tunnel intercha ...

New Hampshire Route 1A New Hampshire Route 1A is an long state highway located in southeast New Hampshire. The route runs along the Atlantic coastline from the Massachusetts border north to Rye, then turns toward downtown Portsmouth. The southern terminus is at the Mas ...

New York State Route 1A New York State Route 1A (NY 1A) was a north–south state highway mostly located within New York City. It extended for just under from an intersection with NY 27 near the Holland Tunnel in Lower Manhattan to an interchange with U. ...

Rhode Island Route 1A Route 1A, largely signed as Scenic 1A, is a long numbered state highway located in Washington County, Rhode Island, United States. The route, which parallels U.S. Route 1 (US 1) for its entire length, has four distinct sections connected by US ...

In popular culture

* The route in

Richard Bachman Richard Bachman is a pen name (as well as fictional character) of American horror fiction author Stephen King. King portrays Bachman in the third season of the FX television series '' Sons of Anarchy''. Origin At the beginning of King's care ...

's horror novel, ''

The Long Walk ''The Long Walk'' is a dystopian horror novel by American writer Stephen King, published in 1979, under the pseudonym Richard Bachman. It was collected in 1985 in the hardcover omnibus '' The Bachman Books'', and has seen several reprints sinc ...

'' (1979), begins each year at the Maine–New Brunswick border at 9:00 on the morning of May 1 and travels down the

, along US 1, until the winner is determined. *The Atlantic Highway features prominently as both a location, and a character in

Seanan McGuire Seanan McGuire (pronounced SHAWN-in; born January 5, 1978 in Martinez, California) is an American author and filker. McGuire is known for her urban fantasy novels. She uses the pseudonym Mira Grant to write science fiction/ horror and the pseudon ...

's Ghost Roads series.

References

External links

*
Endpoints of U.S. Highway 1
{{Authority control 01 Interstate 95 Historic trails and roads in Dedham, Massachusetts

Route description

Florida

Georgia

The Carolinas

Mid-Atlantic Region

New England

History

Major intersections

Auxiliary routes

Related state highways

In popular culture

See also

References

External links