S.D. Codified Laws § 31-3-19
Current with legislation signed by the governor on or before 3/6/2024
The provisions of §§ 31-3-23 to 31-3-37, inclusive, apply to all public highways by whatever authority located within any organized county that are not within the limits of any municipality. However, no portion of the state trunk highway system or county highway systems may be vacated, changed, or located except with the approval of and in accordance with an order made by the Department of Transportation.
SDCL 31-3-19