 The first portion of the roadway that is signed as SR 108 today makes its appearance on Georgia state road maps in the middle of 1933, when a route signed as SR 108, and measuring , ran from Jasper, at the intersection of SR 5 and SR 53 at the time, north into Cartecay in Lumpkin County, to what was then signed as SR 43, and which corresponds to SR 52 today.This route took vehicle traffic from Atlanta via SR 5 and SR 108 to the community of Tate Mountain Estates, a summer retreat planned by Colonel Sam Tate for wealthy Atlantans.In the middle of 1941, the first roadway corresponding to today's routing of SR 108 appears, with the construction of a stretch of road, designated as SR 154, and measuring , which ran north from what was then signed as SR 20 (and today is SR 140) in Waleska.