Mo. Rev. Stat. § 229.250
If it shall appear from the application that it will be necessary to cut, remove, raise or in any way interfere with any electric wires, transmission lines, or the feed and trolley wires of any interurban railroad, or move any poles bearing any such wires or cables, or that it will be necessary to cross the tracks of any steam or interurban railroad, it shall be the duty of the county clerk to give the persons, firms or corporations owning or operating such wires, feed wires, transmission lines, trolley wires, or owners of such steam or interurban railroads at least five days' notice of the time and place when and where the removal of said poles, or the cutting or raising or otherwise interfering with said wires, or the crossing of any steam or interurban railroad will be necessary.
§ 229.250, RSMo