Mo. Rev. Stat. § 8.270: Appropriations for less than $100,000, how paid out.

If the amount appropriated is less than one hundred thousand dollars for constructing, renovating or for repairing, or for both building and repairing, no warrant shall be drawn on the state treasury payable out of the appropriation for any part thereof, until satisfactory evidence is furnished to the commissioner of administration that the work has been completed according to the contract, and not in excess of the amount appropriated therefor.