A worldwide technology outage is causing disruption to some State of Illinois online systems. We are aware of this issue and are diligently working on restoration.

Agency Alert

Welcome to the new IDOT home page. Our location has changed, please update any bookmarks.

Consultant 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

Contact Us

Illinois Department of
Transportation
Hanley Building
2300 S. Dirksen Parkway
Springfield, IL 62764

(217) 782-7820 or
TTY (866) 273-3681

Helpful Links

A to Z Index
Accessibility
Employment
FOIA
Privacy
Report Fraud

Stay Informed

Amber Alerts
Getting Around Illinois
IDOT in Motion
Road Closures

Consultant Resources

Standard Specifications / Supplemental Specifications and Recurring Special Provisions

Footer

Contact Us

Helpful Links

Stay Informed