By 1935, it was extended to the north and west, assuming the routing of SD 47 when the latter highway was relocated west of the Missouri River; its northern terminus was at the intersection of US 16 in Pukwana (in Brule County).
By 1935, it extended to the north and west, taking on the route of SD 47 when that highway was moved west of the Missouri River. Its northern boundary was at the intersection of US 16 in Pukwana (Brule County).