Mo. Rev. Stat. § 49.545: Application of proceeds of bonds.

All moneys derived from any bonds issued pursuant to the provisions of sections 49.520 to 49.580 shall be applied solely to the purchase or erection of the land, buildings and necessary appurtenances thereto, provided that the moneys may be used to advance the payment of the interest on bonds during the first three years following date of issuance of the bonds.