Colorado Revised Statutes Title 31. Government Municipal § 31-15-706. Railroad track

(1) The governing body of each municipality has the power to grant the use of, or the right to lay down, any railroad track in any street of the municipality to any steam or street railroad company operating its cars, by any kind of mechanical motive power, only upon the written consent of the owners of the land representing more than one-half of the frontage of the street or so much thereof as is sought to be used for railroad purposes. No franchise shall be granted on that part of any street upon which any other company is operating cars without the written consent of a majority of the frontage owners in every block abutting the track already down upon said street.

(2) The governing body of each municipality has the power to extend, by condemnation or otherwise, any street, alley, or highway over or across or to construct any sewer under or through any railroad track, right-of-way, or land of any railroad company within the corporate limits, but where no compensation is made to such railroad company, the municipality shall restore such railroad track, right-of-way, or land to its former state or in a sufficient manner not to have impaired its usefulness.