Colo. Rev. Stat. § 42-8-107
Within thirty days after receiving notification from the chief of the Colorado state patrol, the department of transportation shall make available without charge to the Colorado state patrol such rights-of-way upon or adjacent to the public highways of this state as are needed for the construction or reconstruction of port of entry weigh stations. If such rights-of-way are not available, the department of transportation shall acquire such rights-of-way as are needed to carry out the purposes of this article out of money in the state highway fund provided for right-of-way acquisition. If possible, the construction, reconstruction, and maintenance of port of entry weigh stations shall be accomplished with forces of the department of transportation within thirty days after notification by the chief of the Colorado state patrol requesting such work.
C.R.S. § 42-8-107