| Interstate Highways of South Carolina | |
|---|---|
.svg) .svg)  Highway shields for I-26, I-385, and I-20 Bus. Spur | |
 Interstate Highways highlighted in red; future sections in blue; unbuilt sections in orange | |
| System information | |
| Maintained by SCDOT | |
| Length | 862.60 mi (1,388.22 km) |
| Formed | June 29, 1956[1] |
| Highway names | |
| Interstates | Interstate XX (I-XX) |
| Business Loop: | Interstate XX Business Loop (I-XX Bus.) |
| Business Spur: | Interstate XX Business Spur (I-XX Bus.) |
| System links | |
There are 11 Interstate Highways—5 primary and 6 auxiliary—that exist entirely or partially in the U.S. state of South Carolina. As of December 31, 2013, the state had a total of 850.80 miles (1,369.23 km) of interstate and 11.80 miles (18.99 km) of interstate business, all maintained by the South Carolina Department of Transportation (SCDOT).[2]
- ^ Weingroff, Richard F. (Summer 1996). "Federal-Aid Highway Act of 1956, Creating the Interstate System". Public Roads. Vol. 60, no. 1. Washington, DC: Federal Highway Administration. ISSN 0033-3735. Retrieved March 16, 2012.
- ^ Starks, Edward (January 27, 2022). "Table 3: Interstate Routes in Each of the 50 States, District of Columbia, and Puerto Rico". FHWA Route Log and Finder List. Federal Highway Administration. Retrieved January 23, 2023.