 In 1979, the parts of the route that had been signed as SR 156 were re-designated as SR 108, which extended this designation from SR 20 all the way up to SR 52 in Lumkpin County.The one remaining portion of SR 143, from SR 108 to Tate, was renumbered as SR 108 Connector.At the start of 1983, SR 108 had assumed its present routing.