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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.

IDOT Material Labs

To ensure that quality materials are used in highway projects, IDOT maintains a system of sampling, testing, documentation, and reporting of test results. This section supplies the required forms, manuals and guides needed to comply with agency policies, and specifications and also houses qualified products lists by material laboratory. To learn more please select the appropriate lab: