Georgia State Route 138 is a highway in the U.S. state of Georgia. The highway is an east-west route that begins at the junction of S.R. 92 just north of Fairburn and ends at the intersection of S.R. 10 Business near Monroe. It totals appoximately 66 miles in length. The state route travels through the cities of Union City, Riverdale, Jonesboro, Stockbridge, Conyers, Walnut Grove and Monroe. Mitchell Freeway in Perth, Western Australia For other uses, see Highway (disambiguation). ... A U.S. state is any one of the 50 states (four of which officially favor the term commonwealth) which, together with the District of Columbia, form the United States of America. ... Fairburn is a city located in Fulton County, Georgia. ... Monroe is a city located in Walton County, Georgia. ... Union City is a city located in Fulton County, Georgia. ... Riverdale is a city located in Clayton County, Georgia. ... Jonesboro is a city located in Clayton County, Georgia. ... Stockbridge is a city located in Henry County, Georgia. ... Conyers is a city located in Rockdale County, Georgia. ... Walnut Grove is a town located in Walton County, Georgia. ...