The Illinois Department of Transportation (IDOT) has responsibility for
planning, construction and maintenance of Illinois' extensive transportation
network, which encompasses, highways and bridges, airports, public transit, rail
freight and rail passenger systems. It operates with an annual budget of
approximately $5 billion.
General inquiries about IDOT can be directed to the
Illinois Department of Transportation, 2300 S. Dirksen
Parkway, Springfield, Illinois 62764 (217) 782-7820 or TTY
The mission of IDOT is to provide safe, cost-effective transportation for
Illinois in ways that enhance quality of life, promote economic prosperity, and
demonstrate respect for our environment. We will accomplish our mission
while making the following principles the hallmark of all our work:
Safety, Integrity, Responsiveness, Quality, and Innovation.
To view the various modal divisions or bureaus that assist in accomplishing
this mission, please see the current IDOT Annual