Illinois Department of Transportation, Ann L. Schneider, Secretary
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Patrick J. Quinn, Governor
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Welcome to the I-39/U.S. 20 Improvement Project Web site. 

The Illinois Department of Transportation (IDOT) has initiated a Phase I preliminary engineering study to evaluate alternatives for improvements to I-39/US 20/US 51 from the I-39/US 20 Interchange to the Harrison Avenue Interchange (Project Map). The study includes alternatives for:

  • reconstructing the I-39 and U.S. 20 interchange,
  • reconstructing the U.S. 20 and Harrison Avenue interchange, and
  • constructing additional lanes on U.S. 20 between the interchanges

The purpose of this site is to communicate important project-related information and encourage public interaction during the planned public involvement meetings. We look forward to your participation and feedback.

Please choose a topic below to learn more. Or, if you have any questions, please contact us.

I-39/U.S. 20 Improvement Project

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Project Description
Project Location
Purpose and Need
Public Involvement
The Study Process
Project Exhibits
Traffic Projections
Aerial Photography
Environmental Information
Project Schedule
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