U.S. Federal Route 31 is the main north-south surface highway in Eastern Jackson County. It is a two lane highway through the county. U.S. Rt. 31 passes thorugh the following towns in Jackson County. Reddington Uniontown Crothersville U.S. Rt. 31 is not multi-plexed in Jackson County. U.S. Rt. 31 crosses the following highways in Jackson County. U.S. Rt. 50, near Seymour. Interstate 65, near Uniontown. (NO INTERCHANGE) Indiana State Route 250, at Uniontown. Interstate 65, near Crothersville.