I55 (Lorenzo Road) Project Study


View up to date information on Illinois’ Covid-19 vaccine plan and vaccination eligibility from the State of Illinois Coronavirus Response Site

I-55 at Lorenzo Road and IL 129 Study

The Illinois Department of Transportation (IDOT) invites you to participate in the virtual public outreach for the preliminary engineering and environmental study (Phase I) for the improvement of Interstate 55 (I-55) at Lorenzo Road and at Illinois Route 129 (IL 129) in Will County. Instead of hosting a regular public meeting, IDOT will conduct virtual public outreach to share details on the project and encourage public participation until December 14, 2020 through a new website.

On the website, the public can watch a video about the project, explore exhibits including the alternatives carried forward and leave comments.

Written comments can be submitted via email, mailed or submitted through the above website.  Comments received by December 14, 2020 will become part of the official public outreach record.

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.


The Illinois Department of Transportation (IDOT) is currently studying potential improvements to Interstate 55 (I-55) at Lorenzo Road and at IL 129 in Will County near the City of Wilmington.

In this region, I-55 serves as one of two main north-south interstates between Chicago and downstate Illinois. The I-55 at Lorenzo Road interchange is a full-access interchange, while the interchange at IL 129 only provides a northbound entrance and exit. Traffic traveling southbound along I-55 must exit IL 113 to access IL 129.

The I-55 interchanges at Lorenzo Road and at IL 129 mainly serve the City of Wilmington along with the industrial developments in the area.

IDOT develops highway transportation improvement projects in 3 phases. The I-55 at Lorenzo and IL 129 study is currently in Phase I. During this phase, preliminary engineering and environmental studies are completed to develop an improvement of the roadway that addresses an established purpose and need.

The purpose of this project is to improve safety, facility condition, and interchange operations at I-55 at Lorenzo Rd and at IL 129.

IDOT develops and implements projects using a three-phase process:

  • Phase I: Preliminary engineering and environmental studies
  • Phase II: Contract plan preparation and land acquisition
  • Phase III: Construction

The I-55 at Lorenzo and IL 129 preliminary engineering and environmental studies (Phase I) are currently ongoing. Funding for Phase II and Phase III is included in IDOT’s FY 2021-2026 Proposed Highway Improvement Program.  After Phase I completion, the project will move into Phase II. Contract plan preparation and land acquisition process is anticipated to take 18 to 24 months to complete and construction is anticipated to take 24-36 months to complete.

Phase I: Preliminary Engineering and Environmental Studies
During this phase, the project team collects information, a range of alternatives, including a “no build” alternative, is developed and potential effects to study area resources are identified.  Environmental analyses are conducted to comply with the National Environmental Policy Act (NEPA). The results of these studies will be presented in an Environmental Assessment (EA) and Combined Design Report. Learn more about NEPA.  

Phase I Overview


Context Sensitive Solutions

A key planning tool for this study will be a stakeholder involvement program based upon the principles of Context Sensitive Solutions (CSS). CSS is an interdisciplinary approach that seeks effective, multimodal transportation solutions by working with stakeholders to develop, build and maintain cost-effective transportation facilities which fit into and reflect the project’s surroundings (its “context”).

Through early, frequent, and meaningful communication with stakeholders and a flexible, creative approach to design, the resulting project should improve safety and mobility for the traveling public while seeking to preserve and enhance the scenic, economic, historic, and natural qualities of the settings through which they pass. CSS stakeholder activities will include meetings with local stakeholders/special interest groups, and other forms of public outreach including a public hearing. All input will be evaluated and used to help shape viable solutions.

The CSS project approach enhances public participation in the transportation planning process.

This project is being developed in accordance with the National Environmental Policy Act (NEPA) to ensure that environmental factors are weighted equally when compared to other factors in the decision-making process. Learn more about NEPA.

The study includes multiple opportunities for you to participate by submitting comments, attending public outreach events and keeping informed through this website and newsletters. We will update this website as the I-55 at Lorenzo and IL 129 Study progresses to help you stay informed.

Your participation and input are vital to the success of the study. We value your input and look forward to your participation. To get involved:

  • Join our Mailing List
  • Submit Comments
  • Review materials on the Resources page
  • Participate in public outreach events


We are engaging the community in the following ways:

  • Small group/individual meetings
  • Public outreach events
  • Informational materials
  • Media releases

Because stakeholder involvement is critical to the planning process for this study, a Stakeholder Involvement Plan (SIP) has been developed to guide the stakeholder involvement program.

Contact Us

We are interested in hearing your ideas and opinions! Please let us know what you think about the I-55 at Lorenzo and IL 129 Study. Get all of the I-55 at Lorenzo and IL 129 Study information sent directly to you by joining our project mailing list.

Please use the e-mail address below to submit a comment or question and/or join the mailing list. 

If you prefer, you may contact us by mail, email or telephone:

Illinois Department of Transportation, District 1
Attn: Anna Kutryn, P.E.
201 West Center Ct.
Schaumburg, IL 60196

E-mail: LorenzoIL129Study@gmail.com 

Phone: (847) 705-4569

Browse study documents, materials and resources to learn more about the I-55 at Lorenzo Rd and at IL 129 Study.


Public Outreach Materials

Virtual Public Outreach #1
November 16, 2020 – December 14, 2020

IDOT is currently engaged in Phase I for this project. This site will be updated periodically as the project progresses. Construction (Phase III) is funded in the FY 2021-2026 Proposed Highway Improvement Program. The Illinois Department of Transportation (IDOT) wishes to thank you for your support and patience.

Photo Gallery