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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.

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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