CDOT Online Transportation Information System

This is the access point to information frequently used for transportation planning and project development. Information is provided on current and projected traffic volumes, state highway attributes, summary roadway statistics, and geographic data.

What's new?

IRIS 2016 is now available by searching for "IRIS".
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2017 roadway imagery and condition data now available in Windshield/Videolog
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Try the C-Plan link below for more web maps.
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The Traffic Volume map has been upgraded to a web map. Find it and other web maps on the Maps page and on C-Plan.