All public road locations that are not in local roads, from the Colorado Department of Transportation (CDOT). The location of all major roads, does not contain local roads or highways. Contains data on size of road, type, length, etc.
Highway segments and the various quality assurance data along with the overall grade, from the 2016 review of the Colorado Department of Transportation (CDOT).
Highway segments and the various quality assurance data along with the overall grade, from the 2014 review of the Colorado Department of Transportation (CDOT).