 Between Dothan and Huntsville, SR 53 is the unsigned partner to US 231, however, only SR-53’s mile markers are present along the route.At Huntsville, SR 53 diverts from US 231 and once again becomes a signed route until it reaches its northern terminus just west of Ardmore at I-65/US 31 crossing several major roads along the way including University and Sparkman Drives in Huntsville.The northbound lane of SR 53 actually enters Tennessee before going south to I-65.