Interstate 77 in North Carolina

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Interstate 77 marker

Interstate 77
Route information
Maintained by NCDOT
Length: 105.7 mi[1][2] (170.1 km)
Existed: 1965 – present
Major junctions
South end: I-77 / US 21 at the SC line near Fort Mill, SC
  I‑485 in Charlotte (twice)
I‑85 in Charlotte
I‑40 in Statesville
I‑74 near Mount Airy
North end: I‑77 at the VA line near Mount Airy
Counties: Mecklenburg, Iredell, Yadkin, Surry
Highway system
US 76 NC 78

In the U.S. state of North Carolina, Interstate 77 (I-77) is a 105.7-mile (170.1 km) Interstate Highway, which serves the city of Charlotte and the Western Piedmont. It is part of a highway that goes from Columbia, South Carolina in the south to Cleveland, Ohio in the North, serving as a major link between the Midwest and South Atlantic regions of the U.S.

Route description[edit]

Virginia-North Carolina state line on I-77

Interstate 77 begins at the South Carolina state line, near Fort Mill, in concurrency with US 21. I-77 goes through the city of Charlotte as a major north–south corridor, connecting the Center City with the suburbs of Pineville, Huntersville, Cornelius, and Davidson. Shortly after entering North Carolina, it expands to six lanes. Between I-485 (exit 2) and I-277 (exit 9), the highway experiences massive traffic congestion during weekday rush hours (7:00-9:30 a.m./4:00-6:30 p.m.) due to commuter traffic. Just north of Center City, I-77 makes a unique interchange configuration with Interstate 85, with north and southbound lanes crisscrossing briefly. Between I-85 (exit 13) and I-485 (exit 19), I-77 features the state's only HOV lanes. After I-485, I-77 reduces to five lanes (three lanes northbound), then to four lanes after Gilead Road (exit 23).

At Lake Norman, I-77 crosses into Iredell County and becomes a more suburban interstate, passing by Mooresville and then Statesville, where it intersects with Interstate 40. It turns more rural outside of Statesville and becomes entirely rural after exiting Iredell County. For the rest of I-77's stretch through North Carolina, the only possible rest stop is the town of Elkin; the speed limit through this area is 70 mph (110 km/h). The final 5 miles (8.0 km) of I-77 is concurrent with Interstate 74 to the Virginia state line (where I-74 ends), all within view of the Blue Ridge Mountains.[1]

HOV lanes[edit]

Interstate 77 has the first and only High occupancy vehicle (HOV) lanes in North Carolina, located in Mecklenburg County.[3] Opened since December 2004, they are enforced 24 hours a day, seven days a week and are closed for general traffic unless otherwise posted. They are identified by a "diamond" symbol and overhead signs and are located on the leftmost lanes. Vehicles with two or more occupants can use the HOV lanes. Emergency vehicles when responding to emergencies, mass transit vehicles, privately owned buses, and motorcycles may also use the lanes. Violators are subject to a fine of up to $100 plus court costs; as well as two points against their driver's licenses for each HOV infraction.[3] In 2015, construction began on converting the existing HOV lanes into variable tolling lanes, to be completed in 2018.

The northbound HOV lane begins north of I-85 interchange (exit 13) and ends north of the W.T. Harris Boulevard interchange (exit 18).[3]
The southbound HOV lane begins south of the W.T. Harris Boulevard interchange (exit 18) ends south of the exit ramp for I-277 (exit 11) and features a bypass of the I-85 interchange.[3]

Dedicated and memorial names[edit]

I-77 in North Carolina feature a few dedicated or memorialized stretches of freeway.

  • Blue Star Memorial Highway – unofficial North Carolina honorary name of Interstate 77 throughout the state.[4]
  • Bill Lee Freeway – official North Carolina name of Interstate 77 from Woodlawn Road to the Mecklenburg-Iredell county line, named for William States Lee III (approved on 5 September 1996).[5]
  • Charles M. Shelton Highway – official North Carolina name of Interstate 77 in Surry County (approved on 7 April 2000).[5]
  • General Paul R. Younts Expressway – official North Carolina name of Interstate 77 from the South Carolina state line to Woodlawn Road, in Mecklenburg County (approved on 24 June 1965).[5][6]


I-74 & I-77 near Pine Ridge

Interstate 77 was not part of the original plans for 714 miles (1,149 km) of the nation's Interstate Highway System in North Carolina when they were conveyed in 1956 by the then-North Carolina State Highway Commission. I-77 was added in 1957, increasing the state's mileage to 776 miles (1,249 km).[7]

On 4 August 1959, the commission selected the routing of I-77 to run between Interstate 85 in Charlotte and a point on the Virginia border in Elkin. That would change in late 1960, when the commission voted to route the highway just west of Mount Airy, saying the route would serve the most people.

With construction beginning in the 1960s, I-77 would gain additional mileage in October 1964 when a two-mile (3 km) extension was granted by the U.S. Bureau of Public Roads. Instead of ending at I-85, I-77 now ended at Independence Boulevard (U.S. 74) in downtown Charlotte. Another extension was granted in the late 1960s that extended I-77 from Independence Boulevard to the South Carolina border. The latest extension also included a relocation of U.S. 21 from the city's surface streets to the new interstate.

I-77 opened to traffic in the following segments:

By 1972, I-77 was open from Exit 28 (NC 73) to Exit 73 north of Elkin. The last two sections of the highway to open to traffic was the stretch from Cornelius to Charlotte in 1975 and from Exit 73 to the Virginia state line in 1977.

In April 2001, I-74 was overlapped with I-77 from the Virginia state line to exit 101.[8]

On December 17, 2004, I-77 was widened to six-lanes with HOV lanes, between I-85 to the proposed location of I-485 (later opened 8 December 2008).[3]

On June 28, 2013, a new interchange was added in Mooresville, exit 35: Brawley School Road. The interchange was built with additional shoulder space and lights that will not need to be moved when I-77 is eventually widened in area.[9]

In 2015, NCDOT signed a contract with I-77 Mobility Partners to begin construction and eventual management of the toll lanes starting in 2018.[10] However, new criticism erupted before the financial agreement was made when local politicians discovered the contract was amended in 2014 giving I-77 Mobility Partners a 50-year non-compete clause. The clause eliminated any future widening of additional free-lanes between Charlotte Center City and Mooresville; or if any additional free-lanes were added, then NCDOT would have to pay the developer compensation.[11][12]


Woodlawn Road & Billy Graham Parkway overhead sign

Interstate 77 is planned to have its existing southbound travel lanes widened (not add more lanes), between I-277/NC 16 (Brookshire Freeway) to I-85 in Charlotte. Estimated to cost $16.5 Million, the purpose of the project is to widen the lanes back to proper Interstate standards as agreed with FHWA, when NCDOT were given design exceptions when adding the HOV lanes in 2004. Construction is tentatively scheduled to begin in late 2016.[13]

As of June 2016, HOT lanes are being constructing along Interstate 77. The project is broken into two parts: the first is constructing new travel lanes from I-485 interchange (exit 19) to West Catawba Avenue (exit 28), at an estimated cost of $57 million. The second would be to convert the existing HOV lanes from Brookshire Boulevard (exit 11) to I-485 (exit 19). After completion, drivers and motorcyclists can still use the lane for free if qualified under HOV rules, non-compliant drivers will be charged a toll.[14][15][16][17]

The I-40/I-77 interchange (exit 51) is undergoing a major upgrade in three phases: reconstruction of nearby intersections on both interstates, reconstruction and widening of I-40/I-77 interchange, and construction of new ramps at the interchange. The estimated cost for the entire project is $251 million and construction began in March 2012. It will replace the current interchange, which was built in the late 1960s.[18][19][20]

Auxiliary routes in North Carolina[edit]

Interstate City Type Notes
I-277.svg Interstate 277 Charlotte Beltway A nearly full loop around Charlotte center city

Exit list[edit]

County Location mi[1] km Exit Destinations Notes
Mecklenburg Charlotte 0.0 0.0 I-77 south / US 21 south – Rock Hill, Columbia Continuation from South Carolina
0.9 1.4 1A Westinghouse Boulevard Formerly exit 1 before August 2010
1.8 2.9 1B I‑485 – Huntersville, Pineville Formerly exit 2 (southbound) before August 2010
2.8 4.5 3 Arrowood Road Formerly exit 2 (northbound) before August 2010
3.7 6.0 4 Nations Ford Road
4.8 7.7 5 Tyvola Road Single-point urban interchange
6.0 9.7 6A Woodlawn Road south – Queens University To Pfeiffer University
6.2 10.0 6B NC 49 (South Tryon Street) / Billy Graham Parkway To Billy Graham Library
7.3 11.7 7 To NC 49 / Clanton Road
8.3 13.4 8 To NC 160 / Remount Road Northbound exit and southbound entrance
9.0 14.5 9A NC 160 (West Boulevard) Southbound exit and northbound entrance
9.4 15.1 9B I‑277 north / US 74 east (John Belk Freeway)
9.5 15.3 9C US 74 west (Wilkinson Boulevard) to US 29 to NC 27
9.9 15.9 10A US 29 / NC 27 (Morehead Street) Southbound exit and northbound entrance
10.4 16.7 10 Trade Street / Fifth Street Signed southbound as exits 10B (east) and 10C (west)
11.0 17.7 11A I‑277 south / NC 16 south (Brookshire Freeway east) – Downtown Charlotte
11.2 18.0 11B NC 16 north (Brookshire Freeway west) Northbound left exit
12.4 20.0 12 Lasalle Street / Atando Avenue
13.3 21.4 13 I‑85 – Greensboro, Spartanburg Signed as exits 13A (north) and 13B (south)
15.8 25.4 16 US 21 north (Sunset Road) to NC 115 North end of US 21 overlap; signed as exits 16A (north/east) and 16B (west)
To Historic Latta Plantation/Carolina Raptor Center; parclo
18.6 29.9 18 NC 24 (W.T. Harris Boulevard) To Northlake Mall; parclo
Huntersville 19.7 31.7 19 I‑485 – Matthews, Pineville Signed as exits 19A (north/inner) and 19B (south/outer)
23.0 37.0 23 Gilead Road – Huntersville
25.5 41.0 25 NC 73 – Concord, Huntersville
Cornelius 28.3 45.5 28 US 21 south – Cornelius, Lake Norman South end of US 21 overlap, to be converted into a diverging diamond interchange in August, 2013[21]
Davidson 29.8 48.0 30 Griffith Street – Davidson To Davidson College
Iredell Mooresville 31.7 51.0 31 Langtree Road – Mooresville
33.3 53.6 33 US 21 north – Lake Norman North end of US 21 overlap
35.0 56.3 35 Brawley School Road Single-point urban interchange
36.2 58.3 36 NC 150 – Lincolnton, Mooresville Planned diverging diamond interchange[21]
41.8 67.3 42 US 21 / NC 115 – Troutman half-clover interchange
45.5 73.2 45 Amity Hill Road – Troutman, Barium Springs
Statesville 48.7 78.4 49A US 70 (Garner Bagnal Boulevard) half-clover interchange
49.0 78.9 49B Salisbury Road – Downtown Statesville half-clover interchange
50.1 80.6 50 East Broad Street – Downtown Statesville
51.3 82.6 51 I‑40 – Winston-Salem, Hickory Signed as exits 51A (east) and 51B (west); cloverleaf interchange
54.0 86.9 54 US 21 – Turnersburg
59.0 95.0 59 Tomlin Mill Road – Olin
65.5 105.4 65 NC 901 – Harmony, Union Grove
Yadkin Brooks Crossroads 73.7 118.6 73 US 421 – Yadkinville, Winston-Salem, Wilkesboro, Boone Signed as exits 73A (south) and 73B (north); cloverleaf interchange
79.0 127.1 79
US 21 south / US 21 Bus. north – Jonesville
South end of US 21 overlap
Jonesville 81.9 131.8 82 NC 67 – Jonesville, Boonville, Elkin
Surry Elkin 83.7 134.7 83 US 21 north – Sparta, Roaring Gap North end of US 21 overlap; southbound exit is via exit 85
84.8 136.5 85
NC 268 Byp. – Elkin
93.2 150.0 93 Zephyr Road – Dobson
Oak Grove 100.0 160.9 100 NC 89 – Mount Airy, Galax
Pine Ridge 100.8 162.2 101 I‑74 east – Mount Airy, Winston-Salem East end of I-74 overlap; semi-directional T interchange
Stewarts Creek Township 105.7 170.1 I‑77 north – Wytheville Continuation into Virginia
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See also[edit]


  1. ^ a b c Google (27 January 2011). "I-77 in NC" (Map). Google Maps. Google. Retrieved 27 January 2011. 
  2. ^ "Route Log - Main Routes of the Eisenhower National System Of Interstate and Defense Highways - Table 1". Federal Highway Administration. Retrieved 4 October 2014. 
  3. ^ a b c d e "NCDOT: HOV Lanes". Retrieved 1 November 2011. 
  4. ^ "NCDOT: NC Blue Star Memorial Marker Locations". Retrieved 19 June 2011. 
  5. ^ a b c "North Carolina Memorial Highways and other Named Facilities" (PDF). Retrieved 26 August 2012. 
  6. ^ "General Paul R. Younts Expressway". Retrieved 27 January 2011. 
  7. ^ North Carolina Department of Transportation. Facts: Interstate 77, NCDOT Web site. Retrieved 21 April 2007.
  8. ^ "I-74 Segment 1". Retrieved 2 January 2011. 
  9. ^ Staff (June 28, 2013). "Opening of Exit 35 on Interstate 77 Signals the End of the Brawley School Road Widening Project in Mooresville". North Carolina Department of Transportation. Retrieved June 28, 2013. 
  10. ^ "NCDOT Announces Financial Close on I-77 Express Lanes Project" (Press release). North Carolina Department of Transportation. May 20, 2015. Retrieved May 20, 2015. 
  11. ^ Perlmutt, David (May 19, 2015). "Mecklenburg commissioners side with towns asking for I-77 toll road project delay". The Charlotte Observer. Retrieved May 20, 2015. 
  12. ^ Harrison, Steve (May 20, 2015). "Toll lane opponent: DOT overlooked best free-lane option". The Charlotte Observer. Retrieved May 20, 2015. 
  13. ^ "NCDOT: I-77 Improvements - Mecklenburg County". Retrieved 27 January 2011. 
  14. ^ "NCDOT: Project I-5405". Retrieved 1 November 2011. 
  15. ^ "HOV lanes will change to toll lanes on I-77". Retrieved 1 November 2011. 
  16. ^ "I-77 HOV lanes in NC could add toll". Retrieved 1 November 2011. 
  17. ^ "I-77 Feasibility Study HOV-to-HOT Lanes Conversion" (PDF). Retrieved 1 November 2011. 
  18. ^ "NCDOT: Project I-3819". Archived from the original on 29 October 2011. Retrieved 1 November 2011. 
  19. ^ "DOT Report: Interchange At I-40, I-77 To Cost $250M". Retrieved 1 November 2011. 
  20. ^ "The Construction of I-40/I-77 Interchange" (PDF). Retrieved 1 November 2011. [dead link]
  21. ^ a b Marusak, Joe (February 4, 2012). "New interchange planned for bottlenecked I-77 exit". Charlotte, NC: Charlotte Observer. Retrieved March 2, 2013. 

External links[edit]

Route map: Google

KML is from Wikidata

Interstate 77
Previous state:
South Carolina
North Carolina Next state: