Interstate 20 in South Carolina

Interstate 20
J. Strom Thurmond Freeway
I-20 highlighted in red
Route information
Maintained by SCDOT
Length	141.51 mi[1][2] (227.74 km)
Existed	1964–present
NHS	Entire route
Major junctions
West end	I-20 at Georgia state line
Major intersections	US 25 / SC 121 in North Augusta I-520 in North Augusta US 1 (three times in the state) US 178 near Batesburg-Leesville US 378 near Lexington I-26 / US 76 in Columbia I-77 in Columbia US 601 / SC 12 in Lugoff US 521 in Camden US 401 near Lamar
East end	I-95 / I-20 BS in Florence
Location
Country	United States
State	South Carolina
Counties	Aiken, Lexington, Richland, Kershaw, Lee, Darlington, Florence
Highway system
Interstate Highway System Main Auxiliary Suffixed Business Future South Carolina State Highway System Interstate US State Scenic
← SC 19 → SC 20

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.

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.