South Dakota Highway 15

South Dakota Highway 15 (SD 15) is a 67.562-mile-long (108.730 km) state highway in the northeastern South Dakota, United States. 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 met North Dakota Highway 18 (ND 18).

South Dakota Highway 15

South Dakota Highway 15 (SD 15) is a 67.562-mile-long (108.730 km) state highway in the northeastern South Dakota, United States. 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 met North Dakota Highway 18 (ND 18).