- IROADS: Illinois Roadway Analysis Database System is a graphical application providing access to current and planned projects, roadway attributes, bridge inventory information, and pavement condition images.
- Bridge Information: The Bridge Information tool offers bridge inspection and inventory information to the public.
- Getting Around Illinois: Getting Around Illinois offers a variety of information for the traveling public. This link will route you to the Annual Average Daily Traffic counts for Illinois highway system.
- GIS: The GIS tool offers downloadable roadway, railroad, and structure data by county or statewide.
- SIMS: To fulfill the National Bridge Inspection Standards requirements, IDOT relies on local roads and streets agencies to collect and report inventory and inspection data for their structures. This link will allow you to access this information.
- Hourly Traffic Data: The Hourly Traffic Data site provides hourly traffic information that displays both short-term traffic counts and continuous count station data collected throughout the state. Volume data is collected at all sites. Some sites will include volume, class, and speed data.
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