sentences:  Known as the J. Strom Thurmond Freeway, the highway heads northeastward, bypassing Aiken and Lexington before reaching the state capital of Columbia.It was constructed in various stages beginning in late 1963, with the final section between SC-340 and the Business Spur opening in August 1975.At Columbia, I-20 crosses the Saluda and Broad rivers and travels through the northern part of the city and turns eastward, bypassing Fort Jackson and Camden before reaching Florence.