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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.


Environment Protection Practices

Navigate to the Erosion and Sediment Control webpage for more information in regards to methods to prevent soil and other pollutants from leaving the construction site.

Navigate to the Storm Water Management Plan webpage to view more information in regards to storm water runoff pollution.

Environmental Surveys Forms

Roadside Maintenance

Navigate to the Roadside Maintenance webpage to view detailed information about invasive species and prairie inventories along side our roadways.