Mo. Rev. Stat. § 57.115 – Sheriff may patrol roads and highways (third and fourth class counties)

Sheriffs in counties of the third and fourth class may:

(1) Regularly patrol and police all public roads and highways within the county;
(2) Enforce all laws designed to safeguard and protect these roads and highways;
(3) Report all dangerous conditions on these roads and highways to the county commission or other road or highway supervising body.

(L. 1974 H.B. 1028 § 1)