Mo. Rev. Stat. § 229.380
When any public road in this state shall run across two or more tracks of railroad within two hundred feet of each other, and any road overseer of the road district shall make complaint to the county commission that the difference in grade of such railroad tracks is such as to interfere with the passage of any vehicle on such road, then such county commission shall make an order to the county surveyor to examine such crossings and report his opinion as to any change necessary to be made in any grade, and if he shall be of the opinion that such crossings are such as to interfere with the travel on such road, he shall report the facts to the county commission at any regular or adjourned term thereof, first giving the railroad companies interested notice of the day when he will present such matter to the county commission.
§ 229.380, RSMo
RSMo 1939 § 8736