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?
Roadway Reports for 2022 are available under Reports -> Roadway Reports. IRIS 2022 is also now available by searching for "IRIS" and looking under Documents and Downloadable Data. (8/14/2023)--------------------------------------------------
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.
C-PLAN
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.