The state trunk highway system includes the following in Butte, Meade, Ziebach, Dewey, Potter, Hand, Faulk, Spink, Clark, Codington, and Deuel counties:
From a point on the Wyoming state line north of the southwest corner of section nineteen, township ten north, range one east, thence easterly via Belle Fourche, Newell, Faith, Gettysburg, Faulkton, Redfield, Frankfort, Doland, Clark, Henry, Watertown, and Kranzburg to the Minnesota state line in the southwest quarter of section fifteen, township one hundred seventeen north, range forty-seven west.