Mo. Rev. Stat. § 234.040
The county commission may order any bridge built by the county to be attached to a road district, for the purpose of being kept in repair by such road district; but when the repairs necessary at one time shall exceed in value fifty dollars, the same shall not be required to be done by such road district.
(RSMo 1939 § 8536)
Prior revisions: 1929 § 7900; 1919 § 10688; 1909 § 10488