Neb. Rev. Stat. § 46-255

Any person, constructing a ditch or canal through the lands of another, having no interest in such ditch or canal, shall build such ditch or canal in a substantial manner so as to prevent damage to such land. In all cases where necessary for the free and convenient use of lands on both sides of the ditch or canal by the owner or owners of such lands, the owner or those in control of such ditch shall erect substantial and convenient bridges across such canal or ditch, and they shall erect and keep in order suitable gates at the point of entrance and exit of such ditch through any enclosed field.