U.S. Route 83 in North Dakota U.S. Route 83 in North Dakota U.S. Route 83 (US 83) is a part of the U.S. Highway System that travels from the Mexico–United States border in Brownsville, Texas, to the Canada–United States border near Westhope, North Dakota. In the state of North Dakota, US 83 extends from the South Dakota border north to the Canada-United States border. US 83 enters North Dakota at the South Dakota state line, near the town of Hague, and runs northward for approximately , serving the small cities of Strasburg and Linton before reaching Interstate 94 (I-94). It follows I-94 west to Bismarck, where
South Dakota Highway 15 South Dakota Highway 15 South Dakota Highway 15 (SD 15) is a state highway in the northeastern part of the U.S. state of South Dakota. It connects Clear Lake, Milbank, and Wilmot. SD 15 originally traveled from the Nebraska state line to the North Dakota state line. It followed what would eventually become U.S. Route 77 (US 77), which had been designated before 1931. Part of its path went north from Wilmot to Sisseton, then north to Hammer, along US 81's former path, west to Claire City, north to the North Dakota state line north of Claire City, where it