State Route 138 is a 59.2 mile state highway in Jonesboro, Ga. The highway is a west-to-east route that travels within portions of Fulton, Fayette, Clayton, Henry, Rockdale, Newton, and Walton counties.
Until the early 1990s, it was part SR 138 proper, which ran through Jonesboro. Around that time, a new bypass was built around the north side of the city.
An old portion of SR 138 with a steel truss bridge still exists on privately owned property.