That portion of U.S. Highway 77 from the junction of U.S. Highway 77 and South Avenue in Ponca City extending south to the junction of U.S. Highway 77 and East Harding Road shall be designated as "Dr. Martin Luther King, Jr. Memorial Parkway". The Department of Transportation shall cause suitable permanent markers to be placed on the highway bearing that name.
Okla. Stat. tit. 69, § 1698.91