Illinois 131 Green Bay Road Study

The Illinois Department of Transportation (IDOT) has initiated a Phase I Engineering Study for Illinois Route 131 / Green Bay Road from Russell Road to Sunset Avenue and will follow the National Environmental Protection Act (NEPA) process and encourage extensive public involvement throughout the development process. It is anticipated the study will take 3 to 4 years to complete.

Note: IDOT projects typically have three distinct phases. Phase I (or the project Study) consists of developing the project scope, environmental studies and preliminary design of a project. Phase II (Design) consists of refining the design to develop contract plans and land acquisition. Phase III (Construction) consists of the actual construction of the project.

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