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Agency Alert

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I-270 Over the Mississippi River - Madison County

Welcome to the official website for the I-270 over the Mississippi River project. The Illinois Department of Transportation (IDOT) has created this site to provide information about the progress of the project and to facilitate public input and participation in the project. Please take a few minutes to explore the information available on the site. Project updates, public involvement opportunities, and relevant information will be posted to the site throughout the project. Bookmark this page and check back often for the latest news about the project. If you would like to submit your comments or questions, or sign up for the project mailing list, please visit the Get Involved section of this website. Thank you for your interest in the I-270 over the Mississippi River project. IDOT appreciates your participation and input.