ⓘ List of Interstate Highways in South Carolina. There are 11 Interstate Highways - 5 primary and 6 auxiliary - that exist entirely or partially in the U.S. state ..

                                     

ⓘ List of Interstate Highways in South Carolina

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 of interstate and 11.80 miles of interstate business, all maintained by the South Carolina Department of Transportation.