Skip to main content

SCAM ALERT: A current text message smishing scam claims recipients owe money associated with traffic tickets, tolls and other fines. These are not legitimate messages from the Illinois Department of Transportation. If you receive a message report it to the Federal Trade Commission and/or the FBI’s Internet Crime Complaint Center.

Welcome to IDOT's new website design! The address for some web pages has changed, so be sure to update any saved favorites as needed.

Illinois Department of Transportation

Illinois 4/15 Kaskaskia River Bridge Study St. Clair County

Welcome to the website for the Illinois 4/15 Kaskaskia River Bridge Study project in St. Clair County. The Illinois Department of Transportation created this site to provide information about the progress of the project and to facilitate public input and participation. 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 Illinois 4/15 Kaskaskia River Bridge Study project.

Study

Construction

IDOT is currently in the early stages of Phase II, which involves the development of final construction plans.