Counties Impacted
St. Louis
Franklin
Project Status
In Progress

Project Timeline

Complete
Informational public meeting

A meeting to share information about the project with the public, to discuss potential traffic impacts and to discuss any other issues with the general public.

In Progress
Construction, stage one begins

Construction on the project will begin in spring 2019, with one lane of traffic in each direction shifted to one side of the project while crews work in the closed section.

Not Started
Construction, stage two begins

Construction on this stage will start in summer 2019, with one lane of traffic in each direction shifted to one side of the project while crews work in the closed section.

Not Started
Construction, stage three begins

Construction on this stage will start in late 2019, with one lane of traffic in each direction shifted to the middle of the project, while crews work on the shoulder and in the median.

Not Started
Construction complete

The project is scheduled to be complete in late 2019.

What is the problem?

The Route 109 bridge over Route 100, built in 1974, needs significant repairs to ensure that it remains safe and operational for the foreseeable future.  While this work is being completed, Wildwood is partnering with MoDOT to improve the ramps at Route 109 and Route 100, as well as the intersection Route 109 and Main Street.

 

What is the plan?

MoDOT plans to start construction on this project next spring.  Crews will work on half of the roadway at a time  Crews will remove and replace the deck of the bridge, widen the bridge over Route 100 to four lanes, and construct a two-lane roundabout at the ramps and at Route 109 and Main Street.  Crews will also construct an underpass to take the Wildwood shared use path under Route 109. This project is anticipated to be complete by winter 2019.

Why can’t MoDOT close the bridge completely to get the project done faster?

There is a fairly high level of traffic on Route 109 in this area.  Because there are no good detour routes for southbound traffic, it makes sense to complete the bridge project one-half at a time. Completing the project this way also ensures that emergency vehicles can get to incidents on both sides of Route 100 without detouring.

 

What are the expected impacts?

Since one half of the project will be completed at a time, traffic will be reduced to one lane in each direction through the roundabout on the north side of the bridge through Manchester Road. Since roughly 17,000 vehicles use this roadway daily, traffic will be slow through this area, especially during the morning and evening rush periods. The department will keep the ramps between Route 109 and Route 100 open as much as possible during this project.

For more information

Contact Photo
Thumbnail
Karen Yeomans
Title
Area Engineer, Southwest St. Louis County
Contact Info

Office: (314) 453-1785
Email: karen.yeomans@modot.mo.gov