Revenues for Colorado Department of Transportation for the current and previous state fiscal year.

Expenses for Colorado Department of Transportation for the current and previous state fiscal year.

Airport locations, nearby city, recreation in the area, and more with associated data (hours, annual number of passengers, etc) from the Colorado Department of Transportation (CDOT).

COTrip.org has a real-time travel data feed provided by Intelligent Transportation Systems (ITS), a division of CDOT, for data including Incidents, Weather Stations, etc.
You can access the feed here:
https://manage-api.cotrip.org/
For further information or assistance, please visit the following link:
https://maps.cotrip.org/help/section/for-developers.html

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.

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

Segment lengths and route identifiers for all routes in Colorado. CDOT defines routes by the number designating the State Route, including a section identifier designated by a letter for the State database.

The mile points for every interstate highway in Colorado, from the Colorado Department of Transporation

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

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