S.C. Code Ann. § 58-15-1630

Whenever any such subdivision or department of the State government as is mentioned in Section 58-15-1620, having jurisdiction, may determine upon the elimination of any grade crossing by means of a grade separation structure, prompt notice shall be given to the railroad company owning or operating the railroad involved. Within ten days thereafter the representatives of the department and of the railroad involved shall meet and adopt a layout, with the grades and alignments mutually satisfactory.