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Illinois Department of Transportation

Policy and Procedures

Please visit IDOT’s Contractor Resources webpage to find manuals, guides, specifications, forms, and more to help you do business with IDOT.

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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

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