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Arkansas 43 and Oklahoma 20 are multiplexed from just north of Maysville, AR to the Missouri line, where the road becomes MO 43. The road strattles the state line for the most part, but veers into Oklahoma for a bit near the MO line. This is the only known multistate multilpex in the United States.
New York, New York, 1925? Nope; Magazine, Arkansas, 1997. This sign is on Arkansas 109.
Close up of an Airport 980 shield.