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At a glance:


  • Built in 1967

  • One of three major interstate bridges connecting Illinois and Iowa in the Quad Cities

  • Roadway features outdated and traffic growing, associated increases in crashes

  • Recurring, costly bridge maintenance required

  • Planning and Environmental Linkages study launched in 2020 to consider environmental, community, economic impacts of potential improvements

  • PEL Study completed in 2022 and the project has moved onto the National Environmental Policy Act (NEPA) phase

  • Project moved to Phase I: Preliminary Engineering and Environmental Studies portion of the National Environmental Policy Act in 2022

  • Phase I is expected to conclude in mid-2024, moving the project into Phase II: Final Design & Contract Preparation

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Preferred Alternative Presented for Public Feedback

Fourth Public Meeting Held
on November 15, 2023

Nearly 700 stakeholders joined the fourth online public meeting for the Mississippi River Bridge study on November 15, 2023, to receive a presentation of updated study information and the Preferred Alternative, participate in an live Q&A session, and provide feedback to the Illinois & Iowa Departments of Transportation and professional consulting team.


Following a video presentation and viewing of study exhibits, participants asked questions and provided feedback directly to representatives of the project team.


Please view the information presented at the meeting HERE, and then provide your feedback on the Preferred Alternative for the I-80 Mississippi River Bridge and the I-88 Interchange. A full recording of the public meeting and all meeting materials are also available for review on the meeting materials page.


Comments are always welcome; and those received through November 29, 2023, will become part of the public meeting record.


The Illinois Department of Transportation is conducting this study in conjunction with the Iowa Department of Transportation


A transportation study being conducted under the National Environmental Policy Act. The study is currently in the Phase I: Engineering & Environmental Studies portion of the NEPA process, which results in the selection of a Preferred Alternative to advance into Phase II: Design & Contract Preparation


Phase I study completion is expected mid-2024. Following completion of the study it is anticipated that the next phase of engineering will begin,  involving the development of detailed contract  plans for the selected improvement alternative 


The study includes approximately six miles from the I-88/I-80 interchange in Illinois to 35th Street SW in
LeClaire, Iowa


The bridge does not meet current design standards, and recurring and costly maintenance is required

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