SDCL § 31-18-4: Relicted lands--Highway rights continue.

The apportionment, division, or survey of lands acquired by reliction, either by the owner or owners of such lands, or by virtue of the judgment of any court, pursuant to the provisions of this code, shall not in any manner operate as an abandonment or vacation of any legal highway along or across any such lands, and all section-line highways along or across any such lands shall continue to be public highways until changed or vacated in the manner provided by law.