I-55 Managed Lane Project

The Illinois Department of Transportation is conducting preliminary engineering and environmental studies (Phase I) for the improvement of Interstate 55 from Interstate 355 to Interstate 90/94 to add at least one lane in each direction within the existing median. The existing travel lanes along I-55 will remain free, but the new lanes are proposed to be managed as Express Toll Lanes (ETL) with dynamic pricing to provide travel choices within the corridor. Read more>>

Environmental approval was received by the Federal Highway Administration in July 2016 for one ETL in each direction. Since that approval, IDOT has initiated a new Phase I study to further improve the operations and reliability along the corridor. This new study will evaluate the addition of a second managed lane within the median from east of I-294 to I-90/94, which is the most congested section of the previous study. The section from I-355 to I-294 would remain as one ETL in each direction. The new study will be an Environmental Assessment (EA), which will build upon the approved EA from the previous study, and there will be no changes in right-of-way needs.

This evaluation will follow the Federal National Environmental Policy Act process, which facilitates open and transparent study with public involvement opportunities. It also will follow the Illinois Department of Transportation Context Sensitive Solutions policy, which provides for numerous public involvement opportunities.

Who's Conducting the Study?

Illinois Department of Transportation (IDOT) is managing the consulting contracts and overall study. IDOT will act as a joint lead agency with Federal Highway Administration (FHWA) for the preliminary engineering and environmental study. A consultant team lead by Stantec will conduct the environmental study for the I-55 Managed Lane Project for IDOT.

How Can I Get Involved?

News & Events

  • 12/7/2017 Public Meeting Held In December 2017 The Illinois Department of Transportation (IDOT) held an open house public meeting to review important updates to the preliminary engineering and environmental study (Phase I) for the improvement of... Learn More

  • 10/01/2017 Corridor Planning Group Meeting #1 The first Corridor Planning Group Meeting (CPG) for the I-55 Managed Lane Project was on Thursday, October 5, 2017 at the Stadium Club in Toyota Park, 7000 Harlem Avenue, Bridgeview, IL 60455. If you... Learn More

  • 8/3/2016 I-55 Managed Lane Project Receives Environmental Approval The Federal Highway Administration (FHWA) has determined that the Illinois Department of Transportation's proposed I-55 Managed Lane Project will have no significant impact on the human environment.... Learn More

Study Area Map

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