Welcome to IDOT's new website design! The address for some web pages has changed, so be sure to update any saved favorites as needed.
Resources
Additional information including project documents and displays will be added to this tab as they become available.
Helpful Materials
- Location Map (Location Map.pdf)
- Phase I DDI Simulation (DDI_PM Simulation.mp4)
- Diverging Diamond Interchange (DDI) Information Brochure
- I-39 Phase 1 Report Volume 1 (pdf)
- I-39 Phase 1 Report Volume 2 (pdf)
- Traffic Noise Analysis
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Contact Us
Illinois Department of Transportation
Hanley Building
2300 S. Dirksen Parkway
Springfield, IL 62764
(217) 782-7820 or
TTY (866) 273-3681