U.S. Highway 412 (US 412) runs east-to-west through northern Arkansas for about 290 miles (470 km). The route begins at the Oklahoma state line near Siloam Springs, and ends at the Missouri state line east of Paragould.
^Brooks, Robert; Dienhart, Paul; Karner, Karin; Karner, Martin; Nelson, Steven; Patriarca, Chris; Rigsby, David; Sanderson, Dale; Stuve, Eric (May 31, 2020). "End of US Highway 412". USEnds.com. Retrieved February 5, 2021.[self-published source]