Mo. Rev. Stat. § 260.269
Notwithstanding any provision of law to the contrary, the state, including without limitation, any agency or political subdivision thereof, in possession of used tires, scrap tires, or tire shred may transfer possession and ownership of such tires or shred to any in-state private entity to be lawfully disposed of or recycled; provided, such tires or shred are not burned as a fuel except in a permitted facility; and further provided, such tires shall not be disposed of in a landfill; and still further provided, the cost incurred by the state, agency, or political subdivision transferring such tires or shred is less than the cost the state, agency, or political subdivision would have otherwise incurred had it disposed of such tires or shred. The private entity shall pay for the transportation of such used tires they receive.
§ 260.269, RSMo