Mo. Rev. Stat. § 49.580

Sections 49.520 to 49.580 are deemed to create an additional and alternate method for the acquisition of buildings to be used by first class counties and shall not be deemed to include, alter, amend, or repeal any other statute. No proceedings shall be required for the acquisition of any buildings hereunder, or the issuance of bonds hereunder except as prescribed by sections 49.520 to 49.580, any provision of the general laws of the state of Missouri to the contrary notwithstanding.