State Route 1 is primarily the unsigned partner route assigned to U.S. Highway 431. The two routes are co-aligned from the southern terminus of US-431 at Dothan to the Tennessee state line. South of Dothan, State Route 1 is assigned to U.S. Highway 231. The two highways run north from Dothan through the Wiregrass region of southeastern Alabama through the towns of Headland and Abbeville en route to Eufaula, where it intersects U.S. Route 82. North of Eufaula, en route to Phenix City, the highway encounters some of the most sparsely populated parts of the state, only passing near the unincorporated communities of Pittsview, Glenville, and Seale in the 46 mile (74 km) drive between the two cities. In Phenix City, the highway junctions with U.S. Route 280 and U.S. Route 80. North of Phenix Ci