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 2020 is now available by searching for "IRIS" and looking under Documents and Downloadable Data. (9/15/2021)--------------------------------------------------
Our Reports page has a new look! Click on the Reports tile below to browse the various types of annual reports, including updated reports for 2020. (9/8/2021)
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Visit our Open Data site for data services and downloads. Click on the Open Data tile below to browse the datasets. (8/27/2021)
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Latest MapView updates
Map View
View and query Colorado transportation data and related images and documents. Create customized maps.
Highway Data
View highway characteristics, traffic data, photos and documents. Export reports and data.
Traffic Data
View traffic counts and statistics including AADT, Truck AADT and VMT.
Data Catalog
Search for spatial and tabular data, documents, metadata and glossary terms.
Maps
View and download statewide and regional maps, plus the Official Colorado Travel map.
SL Diagram
Straight Line Diagram displays selected highway characteristics shown as a straight line with a map.
Windshield
Videolog application that plays highway images as if viewed from the windshield of a vehicle.
Reports
Download annual mileage for state highways, city and county roads, truck statistics, and VMT.
CPLAN
CDOT's ArcGIS Online site - an interactive online mapping platform.
Bike & Ped
Query, filter and analyze Bike and Pedestrian traffic counts.
Open Data
Search, download and visualize CDOT GIS data.