Interstate 26 Branch Routes

U.S. 17 North at the beginning of Interstate 26 in Charleston, South Carolina Interstate 26 Kingsport, TN ↔ Charleston, SC U.S. 21/176/321 North at Interstate 126 in Columbia, South Carolina Interstate 126 South Carolina St. Andrews, SC ↔ Columbia, SC Interstate 326 proposed on the 1980 S.C. Official Highway Map Former Interstate 326 South Carolina The Westbound beginning of Interstate 526 from Business Spur I-526 in Mount Pleasant, South Carolina Interstate 526 South Carolina western Charleston, SC ↔ Mount Pleasant, SC