Mo. Rev. Stat. § 8.175

The parking garage located on the northeast capitol complex grounds and the parking garage located on the northwest capitol complex grounds shall be under the joint control and operation of both houses of the general assembly by their respective accounts committees. Those committees, working jointly, shall control parking in and use of those garages. A majority of the membership of each committee shall be necessary to reach decisions regarding the garages. When the general assembly is not in session all parking spaces in the parking garage located on the northwest capitol complex grounds, except two hundred thirty-six spaces assigned by the accounts committees, shall be available to state employees on a first-come, first-served basis.