Colo. Rev. Stat. § 36-1-136
The state board of land commissioners may grant rights-of-way across or upon any portion of state land for any ditch, reservoir, railroad, communication system, electric power line, pipeline, or other installation necessary for the operation of said services or utilities and may grant rights-of-way on any tracts of state land to any person, public agency or instrumentality of the United States, or to this state, or to any of the institutions, agencies, counties, municipalities, districts, or other political subdivisions of this state for the purpose of building schoolhouses or public roads or highways or for any lawful use or purpose. Any right-of-way so granted shall be on such terms as the board shall determine and shall be subject to the filing fee specified in section 36-1-112. Said board may execute and sign, as provided by this article, on behalf of this state, an instrument in writing for such right-of-way or grant. This section shall not be construed to grant authority to said board to convey title to any such land by a grant of right-of-way. Whenever rights-of-way granted for any purposes mentioned in this section cease to be used for such purposes, the rights-of-way shall terminate, and all rights shall revert to this state or its successors in interest.
C.R.S. § 36-1-136