State Highway 1806 in Sioux County, North Dakota

State Highway 1806 in Sioux County is a two-lane, asphalted main road. It runs in a north-south direction and ends at State Highway 24, while the other end is a cul-de-sac. This street is part of the highways 1806 and Lewis and Clark National Historic Trail Auto Tour Route. State Highway 1806 also exists in McKenzie County, Dunn County and Mercer County.