Question: U.S. Route 431 is a spur of another highway whose northern terminus is south of what city?
Sentence (from "U.S. Route 431"): It currently runs for 556 miles (895 km) from Owensboro, Kentucky at U.S. Route 60 to Dothan, Alabama, at U.S. Route 231 and U.S. Route 84.
Relevant evidence: No