Interstate 20 in South Carolina

Interstate 20 (I-20) is the main east–west Interstate Highway in the state of South Carolina, linking the state with important transportation and business hubs to the north, west, and south, including Atlanta, Georgia; Charlotte, North Carolina (via I-77); Savannah, Georgia (via I-95); and Washington, D.C. (via I-95). I-20 travels 141.51 miles (227.74 km) west to east, from the Georgia state line at North Augusta, through Columbia, to end at I-95 in Florence. Past I-95, the roadway continues as Interstate 20 Business (I-20 Bus.) for about two miles (3.2 km) to U.S. Route 76 (US 76), which goes to downtown Florence.

This article is about the section of Interstate 20 in South Carolina. For the entire route, see Interstate 20.

Interstate 20

J. Strom Thurmond Freeway
I-20 highlighted in red
Route information
Maintained by SCDOT
Length141.51 mi (227.74 km)
Existed1964–present
NHSEntire route
Major junctions
West end I-20 at Georgia state line
Major intersections
East end I-95 / I-20 BS in Florence
Location
CountryUnited States
StateSouth Carolina
CountiesAiken, Lexington, Richland, Kershaw, Lee, Darlington, Florence
Highway system
  • Main
  • Auxiliary
  • Suffixed
  • Business
  • Future
  • South Carolina State Highway System
  • Interstate
  • US
  • State
  • Scenic
← SC 19→ SC 20

The Interstate parallels US 1 closely from the state line to Camden where US 1 diverts away from the route and head northeast towards North Carolina while I-20 turns and heads eastward towards Florence.

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