 In those areas, US 231 uses SR 1, sharing the route with US 431 north of Huntsville, where it is referred to as Memorial Parkway.An stretch of SR 53, from Research Park Boulevard in Huntsville to just south of Ardmore, is designated as the "Paul Luther Bolden Memorial Highway" in honor of Paul L. Bolden, a Medal of Honor recipient and Madison County's most-decorated World War II veteran.Beginning at its southern terminus at SR 71, SR 53 assumes a slight northwesterly trajectory as it travels through Dothan, where it joins US 231, heading towards Montgomery.