S.D. Codified Laws § 31-10-4

In the purchase, acquisition, construction, or maintenance under §§ 31-10-2 to 31-10-11, inclusive, of any boundary state highway bridge or approaches thereto, the department may purchase, or institute and maintain proceedings for the condemnation of the necessary right-of-way therefor. All the provisions of the law relating to the condemnation of real or personal property for public state purposes apply and may be exercised by the department for the carrying out of the purposes of §§ 31-10-2 to 31-10-11, inclusive.