Okla. Stat. tit. 69 § 1674
Current through Laws 2024, c. 453.
State Highway 51, from a point one mile east of its intersection with State Highway 151, also known as the "Keystone Dam Road", west to its intersection with State Highway 48 in Mannford, Oklahoma, shall be designated as the "Mannford Expressway". The Department of Transportation shall cause suitable permanent markers to be placed upon the highway bearing the designation.
Okla. Stat. tit. 69, § 1674