U.S. Route 29 (US 29) is a north–south
United States 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 runs for from the western suburbs of
Baltimore, Maryland
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 ...
, to
Pensacola, Florida
Pensacola () is the westernmost city in the Florida Panhandle, and the county seat and only incorporated city of Escambia County, Florida, United States. As of the 2020 United States census, the population was 54,312. Pensacola is the principal ...
. In the
U.S. state
In the United States, a state is a constituent political entity, of which there are 50. Bound together in a political union, each state holds governmental jurisdiction over a separate and defined geographic territory where it shares its sover ...
of
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 29 is a major highway that emerges from
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, ...
, and runs north into eastern
Montgomery County, stretching over through the state and terminating at
Maryland Route 99
Maryland Route 99 (MD 99) is a state highway in the U.S. state of Maryland. Known as Old Frederick Road, the state highway runs from Maryland Route 32, MD 32 near West Friendship, Maryland, West Friendship east to U.S. Route 29 in Maryland, U.S ...
(MD 99) outside of
Ellicott City
Ellicott City is an unincorporated community and census-designated place in, and the county seat of, Howard County, Maryland, United States. Part of the Baltimore metropolitan area, its population was 65,834 at the 2010 census, making it the mo ...
. It serves the cities of
Columbia and Ellicott City and provides the westernmost north–south route between Washington, D.C., and Baltimore.
US 29 in Maryland was a late addition to the United States Numbered Highway System fabricated in 1926, beginning along a corridor once known as MD 27. Since its redesignation, it has been realigned and upgraded many times, now containing freeway and expressway sections.
Route description
Georgia Avenue and Colesville Road
US 29 emerges from Washington, D.C., along
Georgia Avenue
Georgia Avenue is a major north-south artery in Northwest Washington, D.C. and Montgomery County, Maryland. Within the District of Columbia and a short distance in Silver Spring, Maryland, Georgia Avenue is also U.S. Route 29. Both Howard Univers ...
. Running alongside the
Jessup Blair Park, it intersects
MD 410, the East–West Highway, just outside the D.C. border. It then meets the northern terminus of
MD 384 and the southern terminus of
MD 97 at a four-way intersection in
Silver Spring; US 29 subsequently becomes Colesville Road, taking over from MD 384, while MD 97 continues as Georgia Avenue.
Crossing
Sligo Creek Park
Sligo Creek is a free-flowing tributary of the Northwest Branch Anacostia River, Northwest Branch of the Anacostia River in Maryland. (The Anacostia, in turn, feeds into the Potomac River and eventually empties into the Atlantic Ocean via Chesapea ...
the highway intersects the Sligo Creek Parkway just to the south of
Interstate 495 (Capital Beltway); a partial cloverleaf interchange between the highways prevents direct access from US 29 south to I-495 east and I-495 west to US 29 north. Now a divided highway, US 29 continues north, intersecting
MD 193 just beyond the Capital Beltway; this highway provides access to I-495 that is not available at the aforementioned interchange.
Columbia Pike
After crossing the
Northwest Branch Park the route is now known as Columbia Pike and remains a six-lane divided expressway. It interchanges with
MD 650 to the northwest of the former
Naval Surface Weapons Center
*
A Naval Surface Warfare Center (NSWC) is part of the Naval Sea Systems Command (NAVSEA) operated by the United States Navy
The United States Navy (USN) is the maritime service branch of the United States Armed Forces and one of the ...
. The route passes through
Paint Branch Park, over the
Paint Branch
Paint Branch is a tributaryU.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map accessed August 15, 2011 stream of the Anacostia River that flows Southeastwards through Montgomery County and Prince ...
, before meeting East Randolph Road/Cherry Hill Road at a diamond interchange. Continuing northeast, the route intersects Fairland Road, then comes to the interchange with
MD 200 (Intercounty Connector) before meeting Briggs Chaney Road at a diamond interchange.
Running northwest of
Fairland Regional Park, US 29 reaches its first major freeway segment at
Burtonsville, bypassing a former, heavily curved at-grade expressway portion through the community. At this point, it downgrades into a four-lane divided expressway until it enters Howard County. The bypass incorporates the southern end of the former alignment and a diamond interchange with
MD 198 within its southern endpoint; US 29 continues straight ahead through the combined interchange, meeting the northern end of the former alignment at a partial diamond interchange. The 0.92-mile bypassed section of the old road is officially designated US 29A with street signs that say "Old Columbia Pike," which previously ended at MD 198.
The route crosses the
Rocky Gorge Reservoir and enters
Howard County just beyond the northern end of the bypass. It intersects Old Columbia Road just beyond the reservoir and then upgrades into a six-lane grade-separated almost-freeway within its interchange with
MD 216 at
Scaggsville. Continuing as an almost-freeway, it interchanges with
Johns Hopkins Road after two miles (3 km), then downgrades to four lanes again just before the
Middle Patuxent River
The Patuxent River is a tributary of the Chesapeake Bay in the state of Maryland. There are three main river drainages for central Maryland: the Potomac River to the west passing through Washington, D.C., the Patapsco River to the northeast ...
and intersects Rivers Edge Road at a half-signalled intersection. (Rivers Edge Road, which is the sole entryway into a subdivision containing over 300 homes, intersects the southbound carriageway, which has the signals; the northbound carriageway has a signalled turn lane and an unsignalled acceleration lane, both within the median.)
Next, US 29 encounters
MD 32 at a symmetrical cloverleaf; for an extended period, this interchange marked the southern end of US 29's grade separation, with the entire route south of there being an at-grade expressway. North of the interchange, US 29 intersects several major routes that serve the community of
Columbia: Shaker Drive/Seneca Drive,
Broken Land Parkway,
MD 175, and
MD 108. Between Broken Land Parkway and
MD 175, US 29 has a
right-in/right-out
Right-in/right-out (RIRO) and left-in/left-out (LILO) refer to a type of three-way road intersection where turning movements of vehicles are restricted. A RIRO permits only right turns and a LILO permits only left turns. "Right-in" and "left-in" r ...
interchange between the southbound carriageway and South Entrance Road; the northbound carriageway has an at-grade direct turnoff to Gates Lane (and formerly another turnoff to Old Columbia Road). Near the
MD 108 interchange, the northbound carriageway has another direct turnoff to Diamondback Drive.
Beyond the MD 108 interchange, US 29 upgrades again into a fully limited-access six-lane grade-separated freeway as it encounters the western terminus of
MD 100. The heavy flows to and from MD 100 result in US 29 widening again to eight lanes within the interchange, which also incorporates a three-quarter-diamond interchange with the western terminus of
MD 103. The eight-lane segment narrows to six lanes again as it encounters the historic northern end of the US 29 expressway at
U.S. Route 40 within
Ellicott City
Ellicott City is an unincorporated community and census-designated place in, and the county seat of, Howard County, Maryland, United States. Part of the Baltimore metropolitan area, its population was 65,834 at the 2010 census, making it the mo ...
.
Beyond US 40, US 29 interchanges with
Interstate 70
Interstate 70 (I-70) is a major east–west Interstate Highway System, Interstate Highway in the United States that runs from Interstate 15, I-15 near Cove Fort, Utah, to a park and ride lot just east of Interstate 695 (Maryland), I-695 in ...
at a modified directional cloverleaf, and finally terminates at an at-grade intersection with
MD 99 near
Mount Hebron
The Hebron Hills, also known as Mount Hebron ( ar, جبل الخليل, translit=Jabal al-Khalīl, he, הר חברון, translit=Har Hevron), are a mountain ridge, geographic region, and geologic formation, comprising the southern part of the J ...
.
29th Infantry Division Memorial Highway
The entire route in Maryland is also known as the
29th Infantry Division Memorial Highway, and some trailblazer assemblies in the
Ellicott City
Ellicott City is an unincorporated community and census-designated place in, and the county seat of, Howard County, Maryland, United States. Part of the Baltimore metropolitan area, its population was 65,834 at the 2010 census, making it the mo ...
area are marked with the division's distinctive yin-yang symbol. At the US 40 interchange, a monument dedicating the highway to the division has been installed and can be seen from both carriageways.
History
In 1933, the Maryland state government and the D.C. government approached
AASHO
The American Association of State Highway and Transportation Officials (AASHTO) is a standards setting body which publishes specifications, test quality control, protocols, and guidelines that are used in highway design and construction through ...
and the Virginia state government about the possible northern extension of US 29 from its original northern terminus in
Culpeper, Virginia
Culpeper (formerly Culpeper Courthouse, earlier Fairfax) is an incorporated town in Culpeper County, Virginia, United States. The population was 20,062 at the 2020 census, up from 16,379 at the 2010 census. It is the county seat of Culpeper Coun ...
, on
US 15
U.S. Route 15 (US 15) is a -long United States highway, designated along South Carolina, North Carolina, Virginia, Maryland, Pennsylvania, and New York. The route is signed north–south, from U.S. Route 17 Alternate in Walterboro, South Caro ...
. After much deliberation, AASHO and Virginia assented to the modifications, and US 29 was extended from Culpeper along US 15 and
US 211
U.S. Route 211 (US 211) is a spur of US 11 in the U.S. state of Virginia. Known for most of its length as Lee Highway, the U.S. Highway runs from Interstate 81 (I-81) and Virginia State Route 211 (SR 211) in New Market east to US 15 Business, ...
into D.C. and thence into Maryland.
[Federal Highway Administration]
U.S. 29 Maryland to Florida
URL accessed 15:05, January 21, 2007.
Turnpikes
On January 10, 1810, the Columbia Turnpike Road Company was chartered by the General Assembly of Maryland to "make a turnpike road from where the road leading from Montgomery courthouse to Baltimore intersects the Baltimore and Frederick turnpike road near Ellicott's lower mills, in a direction towards Georgetown, until it intersects the line of the district of Columbia, and so that it shall cross Rock creek at not less than three miles above Georgetown" The road was managed by the Columbia Turnpike Company and later came to be known as the Columbia Pike. In 1835 Columbia Pike surrendered its Montgomery and Anne Arundel (Howard) County roads and bridges to the State of Maryland.
The Washington, Colesville and Ashton Turnpike Company was established in 1870 in
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 ...
in the
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...
. Its path began at the Washington and Brookeville Turnpike (also known as the Union plank and turnpike road, today's
Georgia Avenue
Georgia Avenue is a major north-south artery in Northwest Washington, D.C. and Montgomery County, Maryland. Within the District of Columbia and a short distance in Silver Spring, Maryland, Georgia Avenue is also U.S. Route 29. Both Howard Univers ...
), followed the modern path of Colesville Road (US 29) until the crossing of the Northwest Branch at Burnt Mills, where the turnpike took the route of modern Lockwood Drive to join the path of modern New Hampshire Avenue (
MD 650) near
White Oak
The genus ''Quercus'' contains about 500 species, some of which are listed here. The genus, as is the case with many large genera, is divided into subgenera and sections. Traditionally, the genus ''Quercus'' was divided into the two subgenera '' ...
north to
Colesville and then to
Ashton.
"Toll Gate #1" was located just as travelers approached the end of the turnpike at Sligo. The small wooden toll gate, located at the intersection of today’s Colesville Road and Dale Drive, closed in 1910 with the death of its last toll keeper, Henry Charles Ulrich (born 1849). By the mid 1910s, privately run turnpikes had ceased operations with the establishment of Maryland’s State Roads Commission. On April 1, 1930, Harvey and Blanche (Mrs. K) Kreuzberg opened Mrs. K's Toll House Restaurant in the toll house (with significant expansion) at 9201 Colesville Road.
MD 27 and MD 29
US 29 arrived in Maryland in 1934, a year after the initial creation of the Maryland highway numbering scheme. US 29 followed a route initially designated as Maryland Route 27, while today's
MD 27 was designated as Maryland Route 29. The first MD 27 emerged from
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, Na ...
along Colesville Road, then followed US 29's existing route as far as
White Oak
The genus ''Quercus'' contains about 500 species, some of which are listed here. The genus, as is the case with many large genera, is divided into subgenera and sections. Traditionally, the genus ''Quercus'' was divided into the two subgenera '' ...
, where it turned north along
MD 650 and followed its alignment as far as
Ashton. This route had previously been the
Washington, Colesville and Ashton Turnpike. At Ashton, MD 27 then turned east along
MD 108 and followed its alignment through
Clarksville (overlapping
MD 32 before 1996) until it reached an intersection with Columbia Road, just to the west of MD 108's current interchange with US 29's current route. Then, MD 27 turned north and followed Columbia Road (formerly designated
MD 982), becoming Old Columbia Pike (formerly designated as
MD 987) after crossing
MD 103 and continuing north until reaching Main Street (old
US 40
U.S. Route 40 or U.S. Highway 40 (US 40), also known as the Main Street of America, is a major east–west United States Highway traveling across the United States from the Mountain States to the Mid-Atlantic States. As with most routes wh ...
) in old
Ellicott City
Ellicott City is an unincorporated community and census-designated place in, and the county seat of, Howard County, Maryland, United States. Part of the Baltimore metropolitan area, its population was 65,834 at the 2010 census, making it the mo ...
, where it ended.
After US 29's arrival in 1934, MD 27 and MD 29 swapped numbers; today's
MD 27 received its current designation and did not physically change, while the original MD 27 was re-designated MD 29, and then immediately ''promoted'' to US 29, thus removing a conflict between the US highway number and the state highway number system, as AASHO prohibits number duplication between state and US route systems. US 29 followed MD 29's route all the way into Ellicott City, where it then turned east and overlapped US 40 through
Catonsville
Catonsville is a census-designated place (CDP) in Baltimore County, Maryland, United States. The population was 41,567 at the 2010 census. The community lies to the west of Baltimore along the city's border. Catonsville contains the majority of th ...
all the way into
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 ...
, where it ended at
US 1
U.S. Route 1 or U.S. Highway 1 (US 1) is a major north–south United States Numbered Highway that serves the East Coast of the United States. It runs from Key West, Florida, north to Fort Kent, Maine, at the Canadian border, making i ...
(Monroe Street) in southwestern Baltimore. Today, the Baltimore County portion of this route is part of
MD 144.
US 29 Alternate
On November 11, 1954, the state of Maryland gained AASHO's consent to divert US 29 to a more direct alignment, paralleling the now-defunct
MD 196 between
MD 650 and
MD 198, and then continuing onward to
Ellicott City
Ellicott City is an unincorporated community and census-designated place in, and the county seat of, Howard County, Maryland, United States. Part of the Baltimore metropolitan area, its population was 65,834 at the 2010 census, making it the mo ...
via
Scaggsville.
The diversion of the route necessitated the construction of a divided highway between the site of US 29's current interchange with MD 650 in White Oak and an intersection with
MD 198 in
Burtonsville, and a two-lane highway between Burtonsville, across the
Patuxent River
The Patuxent River is a tributary of the Chesapeake Bay in the state of Maryland. There are three main river drainages for central Maryland: the Potomac River to the west passing through Washington, D.C., the Patapsco River to the northeast ...
at the site of the future
Rocky Gorge Reservoir, through
Scaggsville and
Columbia (then a small village east of today's US 29/MD 108 interchange) to a point south of
Ellicott City
Ellicott City is an unincorporated community and census-designated place in, and the county seat of, Howard County, Maryland, United States. Part of the Baltimore metropolitan area, its population was 65,834 at the 2010 census, making it the mo ...
, where the new route merged with the original route near the site of the US 29/MD 103 interchange and continued as normal. It is unclear if the new route was immediately signed as US 29 or as an extension of
MD 196, but an undated GULF map of the state of Maryland shows no highway designation for the route between White Oak and Columbia.
The first new segment of the current route of US 29 opened on November 30, 1959,
[''Washington Post'', November 11, 1959 & January 12, 1959, page B1] and by 1964 MD 196 had been retracted to Burtonsville and US 29 had been rerouted to its current route.
Initially, the AASHO Executive Committee, meeting in
Seattle, Washington
Seattle ( ) is a port, seaport city on the West Coast of the United States. It is the county seat, seat of King County, Washington, King County, Washington (state), Washington. With a 2020 population of 737,015, it is the largest city in bo ...
, designated US 29's original route via Ashton as U.S. Route 29 Alternate, which would be signed upon the originally scheduled completion of the direct route in late 1955.
US 29 Alternate has since vanished, being replaced with a northward extension of
MD 650 through Ashton (replacing
MD 116 north of Ashton) and an eastward extension of
MD 108 as far as
MD 175 Waterloo Road (now itself part of MD 108).
The new Columbia Pike
The 1966 expansion of the tiny village of
Columbia into a massive planned community under the auspices of the
Rouse Company
The Rouse Company, founded by Hunter Moss and James W. Rouse in 1939, was a publicly held shopping mall and community developer from 1956 until 2004, when General Growth Properties (GGP) purchased the company.
Beginnings - Moss-Rouse Company
T ...
led to the construction of the modern Columbia Pike. By the early 1970s, with the completion of the new Columbia Pike, a four-lane divided at-grade highway, between Burtonsville and
US 40
U.S. Route 40 or U.S. Highway 40 (US 40), also known as the Main Street of America, is a major east–west United States Highway traveling across the United States from the Mountain States to the Mid-Atlantic States. As with most routes wh ...
, US 29 had assumed its current shape. The Regal Construction Company completed a section south of MD 108 in June 1970 at a cost of $1.1 million per mile. In 1968, the terminus of US 29 was diverted away from
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 ...
; it was retracted to US 40 in Ellicott City and then moved north two miles (3 km) to
MD 99, and an interchange similar to the one in place between US 29 and US 40 was built to connect the route with
Interstate 70
Interstate 70 (I-70) is a major east–west Interstate Highway System, Interstate Highway in the United States that runs from Interstate 15, I-15 near Cove Fort, Utah, to a park and ride lot just east of Interstate 695 (Maryland), I-695 in ...
(then designated I-70N).
US 29 Freeway
Initially, the northernmost of US 29 were the only grade-separated limited-access segment of that route in Maryland. However, gradual construction of interchanges south of US 40, starting with Howard County's segment in the late 1980s and continuing to the 2000s in Montgomery County, has resulted in a full freeway between I-70 and MD 108, an almost-freeway between MD 108 and MD 216, and a partially grade-separated expressway between MD 216 and MD 650, with interchanges at Johns Hopkins Road and MD 216 completed in the early 2000s. Interchanges were completed in 2004 at MD 198, in 2005 at
E. Randolph Road/Cherry Hill Road, and in 2007 at Briggs Chaney Road. With the completion of the interchange at MD 198, US 29 was realigned slightly to the east. The former alignment is now designated as US 29A. Immediately south of Briggs Chaney Road, construction commenced on a new interchange with
Maryland Route 200
Maryland Route 200 (MD 200), also known as the Intercounty Connector or ICC, is an , six-lane toll road in the U.S. state of Maryland. A controlled-access highway, it connects Gaithersburg in Montgomery County and Laurel in Prince George's Cou ...
(the Intercounty Connector) in 2008.
Baltimore Outer Beltway
The four miles (6 km) of the US 29 freeway between MD 100 and I-70 is part of the
Baltimore Outer Beltway. The Outer Beltway was perceived as a 3/4 circular beltway designed to provide a route parallel to the
Baltimore Beltway
Baltimore ( , locally: or ) is the most populous city in the U.S. state of Maryland, fourth most populous city in the Mid-Atlantic, and the 30th most populous city in the United States with a population of 585,708 in 2020. Baltimore was d ...
. MD 100 represents the major portion that was built; the aforementioned four miles (6 km) of US 29 is another portion. The Outer Beltway was projected beyond MD 99 to run through
Howard
Howard is an English-language given name originating from Old French Huard (or Houard) from a Germanic source similar to Old High German ''*Hugihard'' "heart-brave", or ''*Hoh-ward'', literally "high defender; chief guardian". It is also probabl ...
and
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 ...
Counties and intersect
MD 140,
Interstate 83
Interstate 83 (I-83) is an Interstate Highway in the Eastern United States. Its southern terminus is at a signalized intersection with Fayette Street in Baltimore, Maryland; its northern terminus is at Interstate 81 in Pennsylvania, I-81 near H ...
,
US 1
U.S. Route 1 or U.S. Highway 1 (US 1) is a major north–south United States Numbered Highway that serves the East Coast of the United States. It runs from Key West, Florida, north to Fort Kent, Maine, at the Canadian border, making i ...
, and
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 ...
before terminating at US 40 northeast of
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 ...
.
Future plans
Future plans under study would eliminate all traffic lights between Rivers Edge Road and Stewart Lane. An interchange would be created at Greencastle Road, and all communities in the Blackburn Road area would be linked to Greencastle. Overpasses would be created over US-29 on Fairland and Musgrove Roads with possible interchanges created. In the absence of interchanges, access is possible to these areas via Briggs Chaney or Randolph Roads. Overpasses would be built on Industrial Parkway and Tech Road with ramps to Old Columbia Pike on either side. An underpass would be built on Stewart Lane with ramps to Old Columbia Pike and Milestone Drive. This would enable US-29 to have the structure of a freeway from all points North of New Hampshire Avenue. The route would also be widened to a minimum of six lanes on all parts of this stretch. This would require the reconstruction of several overpasses and underpasses and the expansion of the bridge over the
Patuxent River
The Patuxent River is a tributary of the Chesapeake Bay in the state of Maryland. There are three main river drainages for central Maryland: the Potomac River to the west passing through Washington, D.C., the Patapsco River to the northeast ...
.
Junction list
See also
*
References
External links
US 29 at MDRoads.comUS 29 at AARoads.comMaryland Roads - US 29
{{DEFAULTSORT:U.S. Route 29 In Maryland
Maryland
Roads in Montgomery County, Maryland
Roads in Howard County, Maryland
29-0
Roads with a reversible lane