SDCL § 31-4-200: State Highway 158 from State Highway 15 to Minnesota.

The state trunk highway system includes the following in Grant County:

From State Highway 20 south of Milbank near the northwest corner of section nineteen, township one hundred nineteen north, range forty-eight west, thence east to the Minnesota state line east of Stockholm near the northwest corner of section twenty-two, township one hundred nineteen north, range forty-seven west.