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Interstate 26 (I-26) is a main route 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. T ...
in the
Southeastern United States The Southeastern United States, also referred to as the American Southeast or simply the Southeast, is a geographical List of regions in the United States, region of the United States. It is located broadly on the eastern portion of the south ...
. Nominally east–west, as indicated by its even number, I-26 runs from the junction of
U.S. Route 11W U.S. Route 11W (US 11W), locally known as Bloody 11W, is a divided highway of US 11 in the U.S. states of Tennessee and Virginia. The U.S. Highway, which is complemented by US 11E to the south and east, runs from US 11, US 11E, and US 70 in ...
(US 11W) and US 23 in
Kingsport, Tennessee Kingsport is a city in Sullivan County, Tennessee, Sullivan and Hawkins County, Tennessee, Hawkins counties in the U.S. state of Tennessee. As of the 2020 United States Census, 2020 census, its population was 55,442. Lying along the Holston Ri ...
, generally southeastward to US 17 in
Charleston, South Carolina Charleston is the largest city in the U.S. state of South Carolina, the county seat of Charleston County, and the principal city in the Charleston–North Charleston metropolitan area. The city lies just south of the geographical midpoint o ...
. The portion from
Mars Hill, North Carolina Mars Hill is a town in Madison County, North Carolina, United States. The population was 1,869 at the 2010 U.S. Census, and was estimated at 2,032 in 2018 by the U.S. Census. It is the home of Mars Hill University, the name of which was inspired b ...
, east (compass south) to I-240 in
Asheville, North Carolina Asheville ( ) is a city in, and the county seat of, Buncombe County, North Carolina. Located at the confluence of the French Broad and Swannanoa rivers, it is the largest city in Western North Carolina, and the state's 11th-most populous cit ...
, has signs indicating FUTURE I-26, because the highway does not yet meet all of the
Interstate Highway standards Standards for Interstate Highways in the United States are defined by the American Association of State Highway and Transportation Officials (AASHTO) in the publication ''A Policy on Design Standards: Interstate System''. For a certain highway to ...
. A short realignment, as an improvement in the freeway, was also planned in Asheville but has been postponed indefinitely due to North Carolina's budget shortfalls. Northward from Kingsport, US 23 continues to
Portsmouth, Ohio Portsmouth is a city in and the county seat of Scioto County, Ohio, United States. Located in southern Ohio south of Chillicothe, it lies on the north bank of the Ohio River, across from Kentucky, just east of the mouth of the Scioto River. ...
, as
Corridor B The Appalachian Development Highway System (ADHS) is a series of highway corridors in the Appalachia region of the eastern United States. The routes are designed as local and regional routes for improving economic development in the historical ...
of the
Appalachian Development Highway System The Appalachian Development Highway System (ADHS) is a series of highway corridors in the Appalachia region of the eastern United States. The routes are designed as local and regional routes for improving economic development in the historical ...
, and beyond to
Columbus, Ohio Columbus () is the state capital and the most populous city in the U.S. state of Ohio. With a 2020 census population of 905,748, it is the 14th-most populous city in the U.S., the second-most populous city in the Midwest, after Chicago, an ...
, as
Corridor C The Appalachian Development Highway System (ADHS) is a series of highway corridors in the Appalachia region of the eastern United States. The routes are designed as local and regional routes for improving economic development in the historica ...
. In conjunction with the Columbus– Toledo corridor in Ohio formed by
I-75 Interstate 75 (I-75) is a major north–south Interstate Highway in the Great Lakes and Southeastern regions of the United States. As with most Interstates that end in 5, it is a major cross-country, north–south route, traveling from St ...
, US 23, and State Route 15 (SR 15), I-26 forms part of a mostly high-speed four-or-more-lane highway from the
Great Lakes The Great Lakes, also called the Great Lakes of North America, are a series of large interconnected freshwater lakes in the mid-east region of North America that connect to the Atlantic Ocean via the Saint Lawrence River. There are five lakes ...
to the Atlantic Coast at
Charleston, South Carolina Charleston is the largest city in the U.S. state of South Carolina, the county seat of Charleston County, and the principal city in the Charleston–North Charleston metropolitan area. The city lies just south of the geographical midpoint o ...
. There are no official plans for extensions north of Kingsport, Tennessee.


Route description

, - , TN , 54 , 87 , - , NC , 53 , 86 , - , SC , 221 , 356 , - , Total , 328 , 529 I-26 is a diagonal Interstate Highway, which runs northwest–southeast. The extension north of Asheville is mostly north–south. Where I-26 crosses the
French Broad River The French Broad River is a river in the U.S. states of North Carolina and Tennessee. It flows from near the town of Rosman in Transylvania County, North Carolina, into Tennessee, where its confluence with the Holston River at Knoxville form ...
in Asheville at the Jeffrey Bowen Bridge (previously known as the Smoky Park Bridge), the highway runs in opposite directions from its designations. (I-26 westbound actually goes east. I-26 runs concurrently with I-240, so that I-240 eastbound and I-26 westbound are the same route.) When the extension was made in 2003, the
exit number An exit number is a number assigned to a road junction, usually an exit from a freeway. It is usually marked on the same sign as the destinations of the exit. In some countries, such as the United States, it is also marked on a sign in the go ...
s in North Carolina were increased by 31 to reflect the new mileage. The part that it shares with I-240 is signed as both I-240 and I-26 but follows the I-240 exit numbering pattern. I-26 has signs with an extra FUTURE sign above (and in the same style as) the EAST and WEST signs from Asheville north to
Mars Hill, North Carolina Mars Hill is a town in Madison County, North Carolina, United States. The population was 1,869 at the 2010 U.S. Census, and was estimated at 2,032 in 2018 by the U.S. Census. It is the home of Mars Hill University, the name of which was inspired b ...
, because the older US 23
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 ...
does not yet meet all of the
Interstate Highway standards Standards for Interstate Highways in the United States are defined by the American Association of State Highway and Transportation Officials (AASHTO) in the publication ''A Policy on Design Standards: Interstate System''. For a certain highway to ...
. The road shoulders remain substandard or nonexistent along short sections of the route. A rebuild and relocation is also planned in Asheville to avoid some tight
interchanges Interchange may refer to: Transport * Interchange (road), a collection of ramps, exits, and entrances between two or more highways * Interchange (freight rail), the transfer of freight cars between railroad companies * Interchange station, a rai ...
.


Tennessee

The
exit number An exit number is a number assigned to a road junction, usually an exit from a freeway. It is usually marked on the same sign as the destinations of the exit. In some countries, such as the United States, it is also marked on a sign in the go ...
s in Tennessee were formerly numbered backward—increasing from east (physically south) to west (physically north)—because this highway was formerly signed north–south as US 23 (and I-181). Although this is consistent with the south-to-north numbering conventions, this exit numbering was changed on all 284 signs along I-26 to be consistent with the rest of the east-to-west-numbered highway in March 2007. The remaining I-181 signs north of
I-81 Interstate 81 (I-81) is a north–south (physically northeast–southwest) Interstate Highway in the eastern part of the United States. Its southern terminus is at I-40 in Dandridge, Tennessee; its northern terminus is on Wellesley Isla ...
were also replaced with I-26 signs at that time. For its entire length in Tennessee, I-26 shares the route with US 23. The route is named the James H. Quillen Parkway, after Jimmy Quillen, a past member of the US House of Representatives for Tennessee. In Tennessee, US 23 runs south from the
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 are ...
state line for to Kingsport. I-26 begins at the junction of US 23 with US 11W (which is locally named Stone Drive) northwest of the city. After about , I-26 crosses the South Fork Holston River before swinging around to a generally southeast path through Sullivan County. It reaches its major interchange with I-81 at exit 8A, southwest of Colonial Heights. Shortly after entering Washington County, it reaches the northwest part of Johnson City and also serves as a local transit route as it makes its way around the north and eastern parts of the city. It begins to travel through more obviously mountainous terrain before turning to travel in a south direction. Entering Carter County briefly, it passes exit 27 before entering the Cherokee National Forest and Unicoi County. From this point, it passes through part of the
Blue Ridge Mountains The Blue Ridge Mountains are a physiographic province of the larger Appalachian Mountains range. The mountain range is located in the Eastern United States, and extends 550 miles southwest from southern Pennsylvania through Maryland, West Virg ...
, first the Unaka Range and, later, as it passes
Erwin, Tennessee Erwin is a town in and the county seat of Unicoi County, Tennessee, United States. The population was 6,097 at the 2010 census. It is part of the Johnson City Metropolitan Statistical Area, which is a component of the Johnson City– Kingspo ...
, between exits 34 and 40, the Bald Mountains. It meets the Nolichucky River just after milemarker 38 and travels along its southeast bank before crossing it immediately before exit 40. The remainder of I-26 in Tennessee passes through a sparsely populated area, at elevations of above , before reaching the
North Carolina North Carolina () is a U.S. state, state in the Southeastern United States, Southeastern region of the United States. The state is the List of U.S. states and territories by area, 28th largest and List of states and territories of the United ...
state line.


North Carolina

About beyond Spartanburg, one reaches the
foothills Foothills or piedmont are geographically defined as gradual increases in elevation at the base of a mountain range, higher hill range or an upland area. They are a transition zone between plains and low relief hills and the adjacent topogr ...
of the
Blue Ridge Mountains The Blue Ridge Mountains are a physiographic province of the larger Appalachian Mountains range. The mountain range is located in the Eastern United States, and extends 550 miles southwest from southern Pennsylvania through Maryland, West Virg ...
. After crossing the border into Polk County, I-26 intersects with US 74, a limited-access freeway near
Columbus Columbus is a Latinized version of the Italian surname "''Colombo''". It most commonly refers to: * Christopher Columbus (1451-1506), the Italian explorer * Columbus, Ohio, capital of the U.S. state of Ohio Columbus may also refer to: Places ...
, and it heads up a 6% grade for the next through Howard Gap. Then it passes over the highest bridge in
North Carolina North Carolina () is a U.S. state, state in the Southeastern United States, Southeastern region of the United States. The state is the List of U.S. states and territories by area, 28th largest and List of states and territories of the United ...
, the
Peter Guice Memorial Bridge The Peter Guice Memorial Bridge consists of dual two-lane automobile bridges carrying I-26/ US 74 across the Green River, located between East Flat Rock and Saluda, in Henderson County, North Carolina. Surpassed only by the Phil G. McDo ...
, above the Green River between Saluda and Flat Rock in Henderson County, and it crosses the
Eastern Continental Divide The Eastern Continental Divide, Eastern Divide or Appalachian Divide is a hydrographic divide in eastern North America that separates the easterly Atlantic Seaboard watershed from the westerly Gulf of Mexico watershed. The divide nearly spans ...
at an elevation of , having climbed from an elevation of around at the US 74 interchange. The land flattens substantially after entering the
French Broad River The French Broad River is a river in the U.S. states of North Carolina and Tennessee. It flows from near the town of Rosman in Transylvania County, North Carolina, into Tennessee, where its confluence with the Holston River at Knoxville form ...
drainage basin A drainage basin is an area of land where all flowing surface water converges to a single point, such as a river mouth, or flows into another body of water, such as a lake or ocean. A basin is separated from adjacent basins by a perimeter, ...
from Flat Rock to Hendersonville, Fletcher, and Arden. I-26 has a major interchange with
I-40 Interstate 40 (I-40) is a major east–west Interstate Highway running through the south-central portion of the United States. At a length of , it is the third-longest Interstate Highway in the country, after I-90 and I-80. From west to ea ...
in Asheville. After , US 23 joins I-26 west of Asheville and follows it into Tennessee. The two Interstates cross the
French Broad River The French Broad River is a river in the U.S. states of North Carolina and Tennessee. It flows from near the town of Rosman in Transylvania County, North Carolina, into Tennessee, where its confluence with the Holston River at Knoxville form ...
then, having shared the highway for , immediately part company. As I-240 continues to swing round to the north and east of Asheville, I-26 turns north toward Weaverville and Mars Hill. It enters first the Blue Ridge and then the
Walnut Mountains A walnut is the edible seed of a drupe of any tree of the genus ''Juglans'' (family Juglandaceae), particularly the Persian or English walnut, ''Juglans regia''. Although culinarily considered a "nut" and used as such, it is not a true bot ...
and Bald Mountains of the Appalachian range, passing through the Pisgah and Cherokee National Forests as it does so. As I-26 crosses the Bald Mountains near the North Carolina–Tennessee state line, it travels through a relatively high-elevation rural area. At Buckner Gap, I-26 reaches in elevation. It reaches its highest elevation of at Sam's Gap. For on each side of the state line, its elevation is at least . I-26 has been deemed a scenic highway in North Carolina between its interchange with US 19/US 23 N (exit 9) and the North Carolina–Tennessee border. At Sam's Gap, the
Appalachian Trail The Appalachian Trail (also called the A.T.), is a hiking trail in the Eastern United States, extending almost between Springer Mountain in Georgia and Mount Katahdin in Maine, and passing through 14 states.Gailey, Chris (2006)"Appalachian ...
crosses under I-26. In addition, northbound travelers are able to see the
Blue Ridge Parkway The Blue Ridge Parkway is a National Parkway and All-American Road in the United States, noted for its scenic beauty. The parkway, which is America's longest linear park, runs for through 29 Virginia and North Carolina counties, linking Shenan ...
.


South Carolina

Beginning in the city of Charleston, I-26 travels northwesterly over flat plains with little urbanization past Summerville. After the junction with I-95 just inside of Orangeburg County, the terrain becomes somewhat hilly. Orangeburg is the first major stop outside Charleston with several exits bearing this name. Between Orangeburg and the junction with
I-77 Interstate 77 (I-77) is a north–south Interstate Highway in the eastern United States. It traverses diverse terrain, from the mountainous state of West Virginia to the rolling farmlands of North Carolina and Ohio. It largely supplants the ...
just outside Cayce, the highway goes up and down a few very long hills averaging about . Beyond I-77 is the
Columbia Columbia may refer to: * Columbia (personification), the historical female national personification of the United States, and a poetic name for America Places North America Natural features * Columbia Plateau, a geologic and geographic region i ...
metropolitan area with lodging, dining, and shopping possibilities. This metropolitan area ends mostly after exit 101, past which the terrain becomes somewhat hilly once again. The next major city is Newberry. Later, I-26 splits off north toward
Spartanburg Spartanburg is a city in and the seat of Spartanburg County, South Carolina, United States. The city of Spartanburg has a municipal population of 38,732 as of the 2020 census, making it the 11th-largest city in the state. For a time, the Offi ...
, where I-26 has a junction with the
I-85 corridor Interstate 85 (I-85) is a major Interstate Highway in the Southeastern United States. Its southern terminus is at an interchange with I-65 in Montgomery, Alabama; its northern terminus is an interchange with I-95 in Petersburg, Virginia, n ...
, which has a significant amount of international business and manufacturing. I-26 is deemed a hurricane evacuation route in South Carolina. During hurricane evacuation, lane reversal on I-26 will occur between its junctions with I-526 in Charleston and I-77 in Columbia. This is to aid travelers leaving the Charleston area. Lane reversal on I-26 has been used, such as during evacuations for Hurricane Florence in September 2018.


History

Funding for I-26 in South Carolina was provided by the Federal Aid Highway Act of 1956. The first section of I-26 was built in South Carolina between Columbia and Charleston. Construction started in 1957 and ended in 1969 with an portion opening on September 7, 1960. By fall 1960, I-26 was complete from Spartanburg to Columbia, and, in February 1969, I-26's construction from the South Carolina–North Carolina border to Columbia was completed at a cost of $118 million (equivalent to $ million in ). The first section of I-26 in North Carolina consisted of of the Interstate near Hendersonville, which opened in January 1967. I-26 between the South Carolina–North Carolina border and Asheville was completed in 1976 at a cost of $54.1 million (equivalent to $ million in ). The planning for an extension of I-26 from Asheville to I-81 near Kingsport started in 1987 to accommodate truckers traveling toward I-81 that were banned on US 19 and US 23. I-26 from
Mars Hill, North Carolina Mars Hill is a town in Madison County, North Carolina, United States. The population was 1,869 at the 2010 U.S. Census, and was estimated at 2,032 in 2018 by the U.S. Census. It is the home of Mars Hill University, the name of which was inspired b ...
, to the North Carolina–Tennessee border opened in August 2003 at a cost of $230 million (equivalent to $ million in ). Also in 2003, the full extension of I-26 from the North Carolina–Tennessee border to I-81 was completed and opened.


Interstate 181

Interstate 181 (I-181) was established in December 1985 as an Interstate designation of US 23, which was already built to Interstate standards in the 1970s. In Tennessee, I-181 traversed from US 321/ SR 67, in Johnson City, to US 11W/ SR 1, in Kingsport, totaling . US 23 continued on both directions as Interstate grade to the Virginia line to the north and south to Erwin; by 1992, US 23 was upgraded to Interstate grade south to Sam's Gap at the North Carolina line. All exit numbers were based on US 23 mileage. On August 5, 2003, after completion of a section in North Carolina, I-26 was extended west into Tennessee, replacing I-181 from Johnson City to
I-81 Interstate 81 (I-81) is a north–south (physically northeast–southwest) Interstate Highway in the eastern part of the United States. Its southern terminus is at I-40 in Dandridge, Tennessee; its northern terminus is on Wellesley Isla ...
; north of I-81, I-181 continued into Kingsport. The
American Association of State Highway and Transportation Officials The American Association of State Highway and Transportation Officials (AASHTO) is a standards setting body which publishes specifications, test protocols, and guidelines that are used in highway design and construction throughout the United ...
(AASHTO) initially ruled against an extension of I-26 (as the number) along the remainder of I-181 to Kingsport since that would give a main route Interstate Highway (I-26) a so-called "stub end", not connecting to any other Interstate Highway, an international border, or a seacoast. In 2005, the numerical extension was enacted by the effect of the Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users (SAFETEA-LU), being signed into law on August 10. In March 2007, I-181 was officially decommissioned, as all signs and exit numbers were changed over to I-26's designation.


Exit list


Auxiliary routes

* I-126 is a spur into
Columbia Columbia may refer to: * Columbia (personification), the historical female national personification of the United States, and a poetic name for America Places North America Natural features * Columbia Plateau, a geologic and geographic region i ...
from the northwest; established in 1961, it shares complete concurrency with US 76. * I-326 was an unsigned designated spur to South Carolina Highway 48 (SC 48) in Columbia; approved in 1976, it was decommissioned in 1995 in favor of
I-77 Interstate 77 (I-77) is a north–south Interstate Highway in the eastern United States. It traverses diverse terrain, from the mountainous state of West Virginia to the rolling farmlands of North Carolina and Ohio. It largely supplants the ...
. * I-526 is a partial
beltway A ring road (also known as circular road, beltline, beltway, circumferential (high)way, loop, bypass or orbital) is a road or a series of connected roads encircling a town, city, or country. The most common purpose of a ring road is to assist i ...
of Charleston, running from US 17 west of the city north to I-26 and back east and south to US 17 in Mount Pleasant; it was established in 1989 and features a business spur on its eastern terminus.


References


External links

* *
News article listing new I-26 exit numbers published March 2, 2007
* {{DEFAULTSORT:26 Interstate Highway System Interstate Highways in Tennessee