State Highway 21 in Slope County, North Dakota

State Highway 21 in Slope County is a two-lane, asphalted secondary road. It runs in an east-west direction starting from Theodore Roosevelt Expressway and crosses State Highway 67, 128th Avenue Southwest, 127th Avenue Southwest, 126th Avenue Southwest, 125th Avenue Southwest and 124th Avenue Southwest. This street is part of the highway "21". State Highway 21 also exists in Grant County and Hettinger County.