S.C. Code Ann. § 57-3-690

Whenever the department shall with federal funds, undertake the construction of any county road or shall, in anticipation of federal funds becoming available for such purpose, establish the location of any such road, the lawfully authorized officials of the county concerned shall provide, without cost to the department, all necessary rights-of-way for such construction, including lands for borrow and material pits. In order to secure such rights-of-way and other necessary lands such county officials may exercise any or all of the usual powers of condemnation lawfully authorized to be exercised by them in the case of other county roads.