US Route 431 runs from Owensboro, Kentucky, south to Dothan, Alabama, in the American South.  The northern end is at the US Route 60 freeway bypass around the south side of Owensboro, Kentucky.  US Route 431 goes from there south through Russellville into Tennessee. In central Tennessee, US Route 431 continues heading southward, crossing from the western side of Interstate 65 to the eastern side in Nashville. Entering Alabama, US Route 431 heads for Huntsville, bending southeasterly to the eastern edge of the state.  US Route 431 heads through Opelika and Phenix City along Alabama's eastern edge, to reach Dothan.  The circular bypass around Dothan (Alabama Highway 210) brings US Route 431 around the east side of town, but on the south side of the town, US Route 231 comes from the west to continue south.  That point on the south side of town where US Route 231 turns is the southern endpoint of US Route 431.  US Route 431 also has a business alignment through Dothan, but it ends at the same point as the main alignment, along the bypass road.

My photo for US Route 431 shows a trailblazer for northbound travelers found south of Springfield, Tennessee.  Coming home from Huntsville, Alabama in March, 2023, a closure on a portion of Interstate 24 forced me to take a detour.  That detour allowed the opportunity to take this photo, a vast improvement over my previous US Route 431 photo. US Route 41 lies a little farther to the north from this point.
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