Mo. Rev. Stat. § 91.760

91.760. Powers are additional and supplemental — law shall be controlling. — The powers conferred by sections 91.620 to 91.770 shall be in addition and supplemental to, and not in substitution for, and the limitations imposed by sections 91.620 to 91.770 shall not affect the powers conferred by any other general, special or local law or charter. Bonds may be issued under sections 91.620 to 91.770 without regard to the provisions of any other general, special or local law or charter. The undertaking may be leased, acquired, purchased, constructed, reconstructed, improved, bettered, and extended, and bonds may be issued under sections 91.620 to 91.770 for said purposes, notwithstanding that any general, special or local law or charter may provide for the leasing, acquisition, purchase, construction, reconstruction, improvement, betterment, and extension of a like undertaking, or the issuance of bonds for like purposes, and without regard to the requirements, restrictions, debt or other limitations or other provisions contained in any other general, special or local law, or charter, including, but not limited to, any requirement for the approval by the electors, taxpayers, or voters of any municipality and any restriction or limitation on the incurring of indebtedness or the issuance of bonds. Insofar as the provisions of sections 91.620 to 91.770 are inconsistent with the provisions of any other general, special, or local law, the provisions of sections 91.620 to 91.770 shall be controlling.

(L. 1941 p. 493 § 14)