Iowa Code Title VIII. Transportation [Chs. 306-330B] § 328.15. Contracts--law governing

All contracts for the planning, acquisition, construction, improvement, maintenance, and operation of airports, or other air navigation facilities made by the department, either as the agent of this state or of any governmental subdivision, shall be made pursuant to the laws of this state governing the making of like contracts; provided, however, that where such undertaking is financed wholly or partially with federal moneys, the department, as such agent, or the governmental subdivision acting for itself, may let contracts in the manner prescribed by the federal authorities, acting under the laws of the United States, and any rules or regulations made thereunder, notwithstanding any other state law to the contrary.