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