Mo. Rev. Stat. § 81.110: Construction of jail — bond (cities of 10,000 or less).

If such jail cannot be erected and paid for out of the general revenue and income provided for such city or town, then every such city or town shall have power and authority to issue its bonds, to an amount not exceeding the limit authorized by the constitution of the state, for the purpose of purchasing a site and erecting thereon a city jail for the use of such city or town.