Okla. Stat. tit. 61, § 61-18: Liability of contractor after completion of contract work

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.