Whenever any public officer shall, under the laws of the State of Oklahoma, enter into a contract for the purpose of constructing any highway or turnpike, the contractor or supplier of materials shall not be liable for damages arising out of torts involving injury to persons or damage to property occurring after completion of such contract work and any applicable maintenance obligation and acceptance thereof by such public officer, if all contractual provisions and specifications imposed by state and federal agencies have been complied with by said contractor or supplier of materials.
Provided, however, that nothing herein contained shall apply to any cause of action on behalf of the contracting public agency.
Okla. Stat. tit. 61, § 18