S.D. Codified Laws § 31-20-3

For the purpose of ascertaining the value of the land taken pursuant to §§ 31-20-1 and 31-20-2 for any such proposed highway, the State Board of Appraisal provided for in S.D. Const., Art. VIII, when directed to do so by the commissioner of school and public lands, shall proceed carefully to inspect and view such lands and appraise the value per acre, at not less than the minimum price fixed by the Constitution, together with any damages the state may sustain by reason of the location of such highway.