North Dakota Highway 18 is a major north–south highway in eastern North Dakota. It runs from Highway 30 at the Canadian border south of Gretna, Manitoba to South Dakota Highway 25 north of Claire City.
North Dakota Highway 18 is a major north–south highway in eastern North Dakota. It runs from Highway 30 at the Canadian border south of Gretna, Manitoba to South Dakota Highway 25 north of Claire City. (en)