S.D. Codified Laws § 31-4-155 (2026)
The state trunk highway system includes the following in Moody County: From a point on Interstate Highway 29 near the north line of section thirty, township one hundred seven north, range forty-nine west, thence east via Flandreau to State Highway 13 near the east line of section twenty-eight, township one hundred seven north, range forty-eight west.
Source: SL 1984, ch 209 , § 28.