Where the agriculture or grazing lands of two or more persons adjoin, whether or not such lands are farmed or grazed, it is the duty of the owner of each tract to build one-half of the line fence, such fence to be a lawful fence as described in section 35-46-101. When the owner or tenant of any agricultural or grazing lands owns a previously erected lawful fence upon any line between such land and the agricultural or grazing lands of any other person, and such other person or anyone holding under such person, occupies the adjoining land, it is the duty of such owner to pay the person owning such fence one-half of its cash value.
C.R.S. § 35-46-112