S.D. Codified Laws § 31-4-186 (2026)
The state trunk highway system includes the following the Deuel County: From a point on State Highway 22 south of Gary near the southeast corner of section twenty-one, township one hundred fifteen north, range forty-seven west, thence north to Gary near the southeast corner of section four, township one hundred fifteen north, range forty-seven west.
Source: SL 1984, ch 209 , § 59.