Section 31-4-145 - State Highway 20 from Montana to Minnesota The state trunk highway system includes the following in Harding, Perkins, Ziebach, Dewey, Corson, Walworth, Potter, Faulk, Spink, Clark, Codington, and Grant counties:
(1) From a point on the Montana state line southwest of Camp Crook in section seven, township eighteen north, range one east, thence easterly via Camp Crook and Buffalo to U.S. Highway 85 near the east line of section thirty, township nineteen north, range five east;(2) From a point on U.S. Highway 85 south of Buffalo near the southeast corner of section thirty-one, township nineteen north, range five east, thence easterly via Bison and Timber Lake to U.S. Highway 12 in the southwest quarter of section thirty-three, township nineteen north, range twenty-nine east;(3) From a point on U.S. Highway 83 south of Selby near the northwest corner of section six, township one hundred twenty north, range seventy-six west, thence east to State Highway 47 west of Hoven near the north line of section five, township one hundred twenty north, range seventy-four west;(4) From a point on State Highway 47 south of Hoven near the northwest corner of section twenty-one, township one hundred twenty north, range seventy-four west, thence easterly via Onaka to State Highway 45 near the northeast corner of section twenty-eight, township one hundred twenty north, range sixty-eight west;(5) From a point on State Highway 45 northeast of Faulkton near the northwest corner of section three, township one hundred nineteen north, range sixty-eight west, thence easterly via Florence and Watertown to U.S. Highway 212 near the southeast corner of section thirty-six, township one hundred seventeen north, range fifty-three west;(6) From a point west of Interstate Highway 29 north of Watertown near the northwest corner of section seven, township one hundred nineteen north, range fifty-one west, thence east, south and east via South Shore to the Minnesota state line east of the northeast corner of section twenty-eight, township one hundred eighteen north, range forty-seven west.