Wyo. Stat. § 24-1-113
Any person, company, corporation or association of persons, operating or maintaining in whole or in part, either as owners, agent, occupant or appropriator any ditch, canal or watercourse, not being a natural stream, for irrigation or any other, and different purpose, shall put in, construct, maintain and keep in repair at his, her, its or their expense for one (1) year, where the same crosses any public highway or publicly traveled road, a good substantial bridge, not less than fourteen (14) feet in width, over such ditch, canal or watercourse where it crosses such road. Any violation of the provisions of this section shall be a misdemeanor, and upon conviction thereof, the person so offending shall pay a fine in any sum not exceeding one hundred dollars ($100.00) for each day such ditch, canal or watercourse shall be unbridged, insufficiently bridged, or permitted to remain out of repair; provided, that after the expiration of one (1) year, from the construction of said bridge, the road supervisor of the road district in which said bridge is located, shall upon being notified by the owner or owners of the ditch, canal or watercourse over which said bridge is constructed, at once inspect said bridge, and if found in a good and lawful condition, shall accept the same for the county in which it is located, and said bridge shall thereafter be maintained by the said county.
W.S. 24-1-113