Two I-55 Design Alternatives Revealed in Upcoming Virtual Public Information Meetings

Jefferson County, MO – The Missouri Department of Transportation (MoDOT) is hosting two virtual public information meetings to share I-55 conceptual design alternatives with the public. The public information meetings will be held via Zoom at 4 p.m. Wednesday, Jan. 19 and 5:30 p.m. Thursday, Jan. 20. The same information will be presented at both meetings and registration is required at  Once registered, attendees will receive information on joining the Zoom.

During the virtual public information meetings, the I-55 Corridor Improvements project team will present two conceptual design alternatives, obtain feedback from participants and answer any questions they may have.

This is the second round of public engagement for the I-55 Corridor Improvements Conceptual Study, a seven-month phase in which MoDOT analyzes the current conditions along the interstate and identifies potential solutions. The two conceptual design alternatives have been determined as potential improvements for the I-55 corridor based on MoDOT’s existing conditions analysis and previous public input, among other factors.

In July 2021, the Missouri Highways and Transportation Commission approved a five-year plan for improving state highways and projects that included $112 million for upgrading I-55 in Jefferson County from north of Route Z near Pevely to one mile south of Route 67 near Crystal City and Festus. During the seven-month conceptual study, MoDOT looked at safety, design standards, geometry, traffic congestion, bridge conditions, utilities, local coordination, and future changes and growth in the area. Additionally, the agency will examine how the corridor can be brought up to current safety and design standards.

To learn more about the study, visit


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