S.C. Code Ann. § 5-27-140

In towns of less than five thousand inhabitants, incorporated under the provisions of Chapter 1 of Title 5 of the 1976 Code of Laws of South Carolina, the town council may, in its discretion, authorize the erection of poles, posts and any other obstruction which, without legislative sanction, either mediately or immediately given, would constitute nuisances in, upon or under the highways, streets and roads of said town.