S.D. Codified Laws § 31-25-5 (2026)
All livestock guards shall be at least ten feet wide on the ground. In addition, at one side of such livestock guard there shall be provided or constructed a gate, at least twenty feet wide to accommodate the passage of teams, and wider vehicles.
Source: SL 1953, ch 154 , § 2; SL 1959, ch 140 , § 2; SDC Supp 1960, § 28.09 10-2 .