SC 603: Appeared in 1940 as new primary routing. Ran from as a 1.8 mile spur west off SC 6 just north of the SC 60 junction towards Lake Murray.
In 1947, SC 603 was downgraded to S-32-38. SC 603 ended in the vicinity of Ferrel Ln.
SC 603 in northwestern Lexington County
1940 Official
