Mo. Rev. Stat. § 67.282
Notwithstanding any provision of law to the contrary, in any county of the first classification with a charter form of government which has a population of at least nine hundred thousand inhabitants, in any county of the first classification with a charter form of government which has a population of at least two hundred thousand inhabitants but not more than three hundred thousand inhabitants, and in any county of the first classification that does not have a charter form of government which has at least one hundred sixty-five thousand inhabitants but not more than two hundred thousand inhabitants, the use of any public street for construction traffic where such street is the only route to reach a specific parcel of property shall not be limited by an order or ordinance of any political subdivision of this state affecting construction traffic, directly or indirectly, whether or not such property is located within the boundaries of such political subdivision.
§ 67.282, RSMo