Colo. Rev. Stat. § 43-1-1311
(1) Before any railroad tracks are removed from abandoned railroad rights-of-way in Colorado, if a proper legal description is not available, the person or entity removing the railroad tracks shall cause a field survey of the centerline of such railroad tracks to be made by a professional land surveyor, if title to any land references such railroad tracks. The professional land surveyor shall deposit a survey plat in accordance with section 38-50-101, C.R.S., showing the following:
Source: L. 97: Entire part added, p. 1623, § 2, effective June 4.