Ark. Code Ann. § 14-121-307: Cooperation with the United States

(a) If improvements are undertaken in cooperation with the United States, the board may enter into an agreement providing for the construction of the works of improvement and awarding of contracts therefor, to be by, and under the control and supervision of, the United States or any agency or instrumentality thereof.

(b) In that event, the advertisement, award, and carrying out of the contracts shall be in accordance with the provisions of law applicable to the federal agency.