Mo. Rev. Stat. § 8.294
There is hereby created within the state treasury the "State Facility Maintenance and Operation Fund", which shall be funded annually by appropriation, and which shall contain moneys transferred or paid to the office of administration or the board of public buildings as operating expenses and for-rent expenses of state-owned facilities operated by the office of administration. The state treasurer shall be custodian of the fund and shall approve disbursements from the fund for maintenance, repair, and operating expenses of the facilities. The provisions of section 33.080 to the contrary notwithstanding, moneys in the fund shall not lapse, unless and only to the extent to which the unencumbered balance at the close of any fiscal year exceeds one-twelfth of the total amount appropriated, paid, or transferred to the fund during such fiscal year.
§ 8.294, RSMo