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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.

Network Overview

Illinois lies at the heart of the nation’s transportation network. Illinois businesses, residents, and visitors have access to one of the greatest multi-modal transportation systems in the nation including the second largest public transportation system, the second largest rail system, the third largest interstate system, the fourth largest highway system, and one of the busiest airport systems. The success of Illinois, its residents, businesses, and visitors relies on a safe, effective, accessible and progressive transportation system where all modes connect in ways that improve travel options and help build communities.

Download the latest Transportation Fast Facts for information on Illinois' multi-modal transportation system.