U.S. Route 16 in South Dakota
U.S. Highway 16 (US 16) is a 69-mile-long (111 km) east–west United States Numbered Highway in the western part of the state of South Dakota. It travels between Yellowstone National Park near Newcastle, Wyoming and Interstate 90 (I-90) in Rapid City.
US 16 eastbound at Keystone Wye
Interstate 90 in South Dakota
Interstate 90 (I-90) in the US state of South Dakota traverses east–west through the southern half of the state.
The Lake Francis Case portion of the Missouri River viewed from a rest stop just south of Chamberlain; the pre-Interstate Chamberlain Bridge is in the center