Ohio State Route 308

State Route 308 (SR 308) is a north–south state highway in the central portion of Ohio, a U.S. state. The southern terminus of SR 308 is at SR 229 in the western end of the village of Gambier, and its northern terminus is 3 mi to the north of that point at a T-intersection with U.S. Route 36 (US 36) that is located approximately 1+1/2 mi east of the city limits of Mount Vernon.

Route description
SR 308 runs exclusively in the central portion of Knox County. The route is not a part of the National Highway System.

History
When first designated in 1932, SR 308 was a spur route connecting US 36 with the village of Gambier and Kenyon College. It would be 1939 before SR 308 would become a connector route, when SR 229 was extended east of Mount Vernon, and in the process connected with SR 308 at its southern terminus.