Project Timeline
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.
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.
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.
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.
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.
An overview of the Route 109 project at Route 100. To see larger images, please see the links below.
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.
Traffic control stage 1
Traffic control stage 2
Traffic control stage 3
Construction photos
Construction on and around the Route 109 bridge over Route 100 in Wildwood, from October 2019. For more photos, visit our Flickr page.
Construction continues at the Route 100 and Route 109 bridge widening and roadwork project. These photos are from August 2019. For more, visit our Flickr page.
Construction around the Route 109 and Route 100 interchange in June 2019. For more photos, please visit the Flickr page here.
Larger image files (pdfs)
For more information
Ryan Pearcy
Title
Area Engineer, South-West St. Louis County
Contact Info
Office: (314) 453-5086
Email: Ryan.Pearcy@modot.mo.gov
Office: (314) 453-5086
Email: Ryan.Pearcy@modot.mo.gov