About CDOT

CDOT and Transportation Facts

Common Fallacy:

Motorists often believe that CDOT maintains local and residential roads, including neighborhood streets. However, cities and counties are responsible for local and residential roads—not CDOT.

What does CDOT do for you?

Transportation impacts our lives each day—from the bridges you cross to the signs you read to the construction reports you follow. A good transportation system allows us to get to work, enjoy recreational activities and access health care. It allows companies to provide products and services to consumers.

The Colorado Department of Transportation (CDOT) exists to ensure that Colorado has a safe and efficient highway system by building and maintaining interstates, US highways and state highways.

To accomplish this goal, CDOT conducts three primary services:

  1. snow and ice operations;
  2. roadway maintenance and preservation; and
  3. construction management.

And then some...


However, CDOT provides much more:

  • traffic monitoring
  • avalanche control
  • rockfall mitigation
  • transit development and grants
  • traffic safety education for impaired driving, teen driving, distracted driving, work zone safety, seat belts and more

Our Division of Aeronautics supports aviation interests state-wide; our Division of Transit and Rail provides assistance to numerous transit systems in the state. CDOT also protects the environment, researches cost-effective asphalt applications, develops more efficient and effective deicing procedures, designs and constructs multi-modal facilities, and so much more.

Most importantly, CDOT helps you get to where you need to go, safely in rain, snow or shine as there are no breaks for CDOT maintenance crews—who are often the first to arrive when a car breaks down or when there is an incident on the highway. CDOT also provides traveler information such as trip travel times, construction delays and construction information to help motorists make informed decisions.

These are only a handful of the many activities CDOT performs to ensure safe and efficient travel on Colorado highways.


With 58 percent of our budget going toward maintaining our current system, it is essential that we are both efficient and effective with our funds. CDOT is accomplishing this in several ways:

  • By analyzing ways to maximize the existing infrastructure, such as by using shoulders during congested times to increase capacity without spending a large amount to widen the highway
  • By being proactive and investing in preventive maintenance activities such as cracksealing and chipsealing so our roadways last longer
  • By helping motorists make informed travel decisions with the use of more electronic messaging to communicate travel times and other road information

These efficiencies are just a few examples of how CDOT is working to maximize our existing system. The Department will continue to analyze and implement more operational efficiencies as opportunities arise.

Filed under:
CDOT at a Glance
  • * Maintains, repairs and plows over 23,000 total lane miles of highway
  • * Maintains 3,447 bridges
  • * Oversees 28 billion miles of vehicle travel annually
  • * Plows about 6 million lane miles each year
  • * Spends $69 million annually on snow removal
  • * Keeps over 35 mountains passes open year-round
  • * Monitors 278 of 522 avalanche paths
  • * Administers about $11 million in federal grants for transit operators and $41 million in federal aviation grants for airports
  • * Manages over $5 million in federal grants for safe driving programs
  • CDOT Contact Information
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Colorado: The Official State Web Portal