This subchapter, § 14-56-201 et seq., § 14-56-301 et seq., § 14-56-401 et seq., § 14-56-501 et seq., and § 14-56-601 et seq. shall not be construed to authorize the legislative body of any city, incorporated town, or county to adopt any ordinance, law, or regulation that requires the taking, elimination, alteration, or diminishment of a legally erected outdoor advertising sign without first making the payment of just monetary compensation therefor.