Mo. Rev. Stat. § 272.310: Owners to repair division fence — remedy for failure.

Every person owning a part of a division fence shall keep the same in good repair according to the requirements of sections 272.210 to 272.370. Either party owning land adjoining a division fence may, upon the failure of any of the other parties, have all that part of the division fence belonging to the other parties repaired, upon the failure of the other party to do so, the repairing to be at the cost of the party so failing to repair his part of the fence.