High Occupancy Vehicle and restricted driving lanes in the state of Colorado from the Colorado Department of Transportation (CDOT).

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

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.

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.

Road attributes including number of lanes, surface type, roughness factor, etc since 1970 from the Colorado Department of Transportation (CDOT).

Noxious weeds found in the state of Colorado along roadways during 2010, from 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).

Road curvature and gradient data in sections across Colorado, from the Colorado Department of Transportation (CDOT), since 2000. Contains roadway sections and various data about them: road width, thickness, curvature, grade, speed limits, signals, etc.

Noxious weeds found in the state of Colorado along roadways during 2012, from the Colorado Department of Transportation (CDOT).

Highway segments and the various quality assurance data along with the overall grade, from the 2015 review of the Colorado Department of Transportation (CDOT).