I-55 Corridor Improvements Conceptual Study in Jefferson County

The Missouri Department of Transportation’s (MoDOT) St. Louis District, in conjunction with the Federal Highway Administration, is conducting a conceptual study along Interstate 55, from the Route Z interchange to the Route 67 interchange in Jefferson County. The I-55 Corridor Improvements project area includes the cities of Pevely, Herculaneum, Festus, and Crystal City.

This initial phase allows 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 future phases, MoDOT will lead the project team through environmental clearance and preliminary design, final design, and construction.

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

Counties Impacted
Jefferson
Project Status
Planning Phase
Route Impacted
Interstate 55

Phase 1 Conceptual Study Timeline

Complete
Analyze Existing Conditions
Summer - Fall 2021
Complete
Public Information Meeting #1
Virtual Meeting on Sept. 22, 2021

A recording of the meeting is below.
 

Complete
Public Information Meeting #2
Virtual Meetings on Jan. 19 & 20

A recording of the meeting is below.

Complete
Develop Recommended Alternatives
Winter 2022
Complete
Complete Conceptual Study Report
Spring 2022

VIRTUAL PUBLIC INFORMATION MEETINGS

JANUARY 2022 MEETING

Virtual public meetings were held on Wednesday Jan. 19 and Thursday, Jan. 20.  The project team presented two conceptual design alternatives and obtained feedback.  In case you missed it, a recording of the meeting is below.
 

SEPTEMBER 2021 MEETING

Two 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.  If you were not able to join virtual public information meeting #1, a recording of it is below for your viewing.  

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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 Jennifer Becker
Jennifer Becker
Title
Project Manager
Department
St. Louis District
Contact Info

Office:  (314) 453-5099
E-mail: Jennifer.Becker@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