Wyo. Stat. § 36-9-120: Rights-of-way to counties.

Upon application of the board of county commissioners of any county, the board of land commissioners shall have authority to grant either a temporary or permanent right-of-way for ditches owned by the county or for county roads over and across any of the state or school lands, upon such terms as said board may determine, and to issue to such county a certificate therefor; no charge shall be exacted for the filing of such application or for the issuance of such certificate or for granting and recording a right-of-way.