I-55 Corridor Improvements Project

The I-55 Corridor Improvements project area includes the cities of Pevely, Herculaneum, Festus, and Crystal City.  The purpose of this project is to address traffic and safety concerns along the I-55 corridor and account for future development and growth patterns in the region.

During the first phase of the project, The Missouri Department of Transportation’s (MoDOT) St. Louis District, in conjunction with the Federal Highway Administration, conducted a conceptual study along Interstate 55, from the Route Z interchange to the U.S. 67 interchange in Jefferson County. The next phase of the project involves preliminary design of the recommended alternative, additional study of traffic patterns, safety, roadway conditions, noise analysis, and environmental documentation.  The final phase of the project is the design/build.


PROJECT GOALS

  1. Deliver the project within the program budget  ($246 million).
  2. Maximize reliability and safety on I-55 and U.S. 67.
  3. Provide a durable and maintainable transportation system compatible with regional development.
  4. Construct the project safely and minimize impacts to customers.
  5. Complete the project on schedule utilizing a diverse workforce.

For more information, download the I-55 Corridor Improvements Fact Sheet. 


REQUEST FOR LETTERS OF INTEREST FOR DESIGN-BUILD SERVICES

The Missouri Department of Transportation (MoDOT) is soliciting Letters of Interest from companies interested in providing Design-Build services for the $246 Million I-55 Corridor Project in Jefferson County, Missouri. One Design-Build team will be selected to design and construct the project.  Click HERE to learn more.

 

INDUSTRY MEETING INFORMATION

An industry meeting and DBE networking event was held on Dec. 1.  Click on the links below to view information presented during the meeting.

 

Counties Impacted
Jefferson
Project Status
Planning Phase
Route Impacted
Interstate 55

Project Phases

Complete
Phase 1 - Conceptual Study
Summer 2021-Spring 2022
  • This initial phase allowed MoDOT to understand the current corridor conditions and identify what improvements could be considered and implemented. The conceptual study will look at the existing safety, design standards, geometry, traffic congestion, bridge conditions, and utilities in the corridor. It will also consider local coordination, and future changes and growth in the area. 
In Progress
Phase 2 - Preliminary Design
Fall 2022 - Spring 2023
  • This phase of the project involves preliminary design of the recommended alternative, additional study of traffic patterns, safety, roadway conditions, noise analysis, and environmental documentation. Throughout this process, MoDOT will seek input and feedback from residents and highway users in the surrounding area. Your input and thoughts will help the MoDOT project team determine plans that are informed by the community.
  • Public Information Meetings October 5 & 6, 2022
In Progress
Phase 3 - Design/Build
Winter 2022-Winter 2026
  • Industry Meeting and Release RFQ - December 2022
  • Shortlist Teams and Release RFP - January 2023
  • Award Project - May 2023
  • Project Completion - Winter 2026

PHASE 2 PUBLIC INFORMATION MEETINGS

Two public meetings were held on Oct. 5 & 6.  The Oct. 5 meeting was an in-person, open house style event at the Festus Public Library and the Oct. 6 meeting was held virtually over Zoom.  In both meetings, the project team shared updates about the preliminary design of the recommended alternatives and obtained feedback from attendees.  If you were not able to attend the meetings, below are the display boards that were shared during the open house, as well as a recording of the virtual meeting.

Preliminary Design Virtual Public Meeting

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PHASE 1 PUBLIC INFORMATION MEETINGS

JANUARY 2022 MEETINGS

Virtual public information meetings were held on Wednesday Jan. 19 and Thursday, Jan. 20, 2022.  The project team presented two conceptual design alternatives and obtained feedback.  A recording of the meeting is below.  
 

SEPTEMBER 2021 MEETINGS

Virtual public information meetings were held on Wednesday, Sept. 22, 2021 where the project team  introduced the project, presented the corridor’s existing conditions and received motorists feedback on current problems along the corridor.   A recording of the meeting is below.

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January 2022 Virtual Public Meeting
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September 2021 Virtual Public Meeting
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Who to Contact

Contact Photo
Photo of Justin Wolf
Justin Wolf, PE
Title
Project Director
Contact Info

St. Louis District
Phone:  314-624-3276
Email:  Justin.Wolf@modot.mo.gov

Contact Photo
Stephen O'Connor Profile Picture
Stephen O'Connor
Title
Area Engineer, Franklin and Jefferson Counties
Department
St. Louis District
Contact Info

Office: (314) 453-5021
E-mail: Stephen.OConnor@modot.mo.gov