2010 South Dakota Code
Title 31 - HIGHWAYS AND BRIDGES
Chapter 04 - State Trunk Highway System
Section 31-4-133 - State Highway 13 from State Highway 34 to U.S. Highway 14.

31-4-133. State Highway 13 from State Highway 34 to U.S. Highway 14. The state trunk highway system includes the following in Moody and Brookings counties:
From a point on State Highway 34 south of Flandreau near the southwest corner of section three, township one hundred six north, range forty-eight west, thence northerly via Flandreau and Elkton to U.S. Highway 14 north of Elkton near the northeast corner of section eight, township one hundred nine north, range forty-seven west.

Source: SL 1984, ch 209, § 6.