Interstate 77 in South Carolina

Interstate 77 (I-77) is a north–south Interstate Highway, extending 91.2 miles (146.8 km) in the state of South Carolina, from the southern terminus at an interchange with I-26 near Columbia, north to the North Carolina state line near Rock Hill and Charlotte, North Carolina.

This article is about the section of Interstate 77 in South Carolina. For the entire route, see Interstate 77.

Interstate 77

Blue Star Memorial Highway
I-77 highlighted in red
Route information
Maintained by SCDOT
Length91.2 mi (146.8 km)
Existed1975–present
NHSEntire route
Major junctions
South end I-26 in Cayce
Major intersections
  • US 21 / US 176 / US 321 in Cayce
  • US 21 (multiple times)
  • US 76 / US 378 in Columbia
  • I-20 in Columbia
  • US 1 in Columbia
North end I-77 / US 21 at the NC state line
Location
CountryUnited States
StateSouth Carolina
CountiesLexington, Richland, Fairfield, Chester, York
Highway system
  • Main
  • Auxiliary
  • Suffixed
  • Business
  • Future
  • South Carolina State Highway System
  • Interstate
  • US
  • State
  • Scenic
← US 76→ US 78
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