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Possible online services disruption due to Internet related outage

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.

Illinois Department of Transportation

Producer and Supplier Approval

There are approximately 13,000 (active/inactive) producers and/or suppliers listed with the Department of Transportation. Updated monthly, the current List of Producers and/or Suppliers provides an alphabetic and a numerical listing including producer/supplier number, name and location.

Producers and/or Suppliers interested in providing materials to be used in construction projects must first obtain approval by the department. 

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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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