Traffic counts on highways and various calculations, from Colorado Department of Transportation (CDOT), for 2017

County boundaries and area, from the Colorado Department of Transportation (CDOT) for 64 counties in the state of Colorado.

Passengers took almost 120 million trips in 2012 on Colorado’s public transportation vehicles, which include buses, light rail and vehicles used by services that transport disabled people. A trip is counted each time a passenger boards a vehicle, no matter how many vehicles the passenger takes to reach a destination.

Traffic counts on public roads under local jurisdiction in 2018. Provided by the CDOT.

CDOT gives a letter grade to overall roadway condition. It is a combination of the percent of highway pavement determined to have high or moderate Drivability Life and the level of service (LOS) delivered by CDOT’s maintenance program. The Department in 2013 changed its way of evaluating pavement condition. Grades for previous years are not directly comparable.

Mileposts (or mile markers) along highways and their locations collection during GPS mapping efforts in the early 2000s from the Colorado Department of Transportation (CDOT).

Traffic counts on highways and various calculations, from Colorado Department of Transportation (CDOT), for 2017

Rapid Transit System, Roadway Networks, Crash Data, Regional Roadway System, Traffic Analysis Data, Railroads, Bicycle Corridors, and more. This data can be searched by keyword or browsed by subject and are available in a variety of formats, including KML, WMS, GeoRSS, and Shapefile.

Public roads under local (city/county) jurisdiction that are functionally identified as local. Does not contain major roads or highways. Contains data on size of road, length, type, etc. Fields include average daily traffic counts, locations of count stations, if it is congested, if maintenance is under shared jurisdiction and the year it was built or last updated, political jurisdictions, and more.

Route locations, segment lengths and route identifiers, from the Colorado Department of Transportation (CDOT).