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SCAM ALERT:  A current text message smishing scam claims recipients owe money associated with traffic tickets, tolls, and other fines.  These are not legitimate messages from the Illinois Department of Transportation.  If you receive a message report it to the Federal Trade Commission and/or the FBI’s Internet Crime Complaint Center.

Illinois Department of Transportation

Contractor Resources

The following manuals, guides, specifications, and forms are provided to help you do business with IDOT.

Standard Specifications / Supplemental Specifications and Recurring Special Provisions

Standard Specifications / Supplemental Specifications and Recurring Special Provisions are now located under Engineering, Architectural & Professional section under the Consultant Resources link.

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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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