Counties Impacted
St. Louis
Route Impacted
Work Type
Sidewalk/ADA Improvements
Planning Phase

Project Milestones

Preliminary Plans

As a part of preliminary or conceptual plans, the department completes most of the evaluation and design for the project.  

Public Meeting

During the public meeting, the department shares the conceptual plans with the public, sharing the possible impacts and the planned project.  They get insight on other concerns from the public and work to incorporate those concerns that fall within the scope and budget of the project.

Not Started
Right of Way process

After the public meeting, the design team creates the Right of Way plans -- this determines the exact right of way the department may need to construct the project, including those that may be needed for a short time (to construct sidewalks or other entrances. Then, the department works with property owners to get the necessary permission to use that property.

Not Started
Project awarded

Once the right of way process is done, the department puts the project out for bid.  Once bids are received, the Missouri Highway and Transportation commission reviews and approves or rejects the bids.  If bids are accepted, the project is awarded to the qualified bidder with the lowest bid.

Not Started
Construction begins

Once the bid has been awarded, the contractor starts planning how it will complete the project, arranging materials, crews and equipment.  Work on the project starts sometime after the contractor gets the notice to proceed with work.

Not Started
Construction complete

Once all the construction is completed and the department has accepted the roadway for maintenance, the project is considered complete.


What is the current situation?

The Missouri Department of Transportation has a two-year project scheduled  for Missouri Route 100 (Manchester Road) between Ballas and Route 141, starting in 2024. During that project, the department will be resurfacing the roadway as well as making updates  to the roadway’s pedestrian facilities. All existing sidewalks and crosswalks need to be updated to be meet current Americans with Disabilities Act requirements. There are some sections of sidewalk that are being connected, as well.  Many of the signals along the corridor will be updated.

What improvements are being made?

The department is updating sidewalks along the corridor to meet Americans with Disabilities act requirements. As a part of that, the department is updating many of the pedestrian signals along the corridor to make them compliant with Americans with Disabilities Act requirements. In addition, two culverts are being replaced – one over Grand Glaize Creek and one over Glaize Creek, and the bridges over I-270 and Des Peres Road are getting rehabilitated.

Are bike facilities included in this project?

Since traffic volumes along this stretch of Manchester Road along this stretch are fairly high, and traffic speeds through the area remain constant, those portions of Manchester currently striped for bike traffic will remain so.  The remainder of the roadway in this area will remain signed for drivers and cyclists to share the lanes.

What are the impacts from the project?

For the most part, impacts during the construction should be relatively minimal. Sections where Manchester is two lanes in each direction, most of the work will be taking place at night. The remaining sections where there are at least three lanes in each direction will be worked on during the day. Drivers can also expect one lane closed in either during non-peak traffic hours while signals and sidewalks are updated.  Business owners with multiple driveways will have at least one access point into their business at all times through construction. Crews will work on half of the access point at a time when there is only one entrance/exit from a business.  Residential driveways are too small to complete half at a time – driveways will need to be closed for several days when they are being worked on.  We anticipate that the contractor will be able to share a general timeframe when they anticipate being in the area -- probably about a week or two in advance.

Work on the two culverts – one west of Barrett Station Road and the other east of Deitrich Road – will mean that crews will have to work on half of the roadway at a time, and traffic will be shifted to the remaining lanes.  Each half of the roadway is expected to take about two months.  Most of the bridge work at I-270 and Des Peres Road  should be able to be completed with night time lane closures. Work on the bridge over I-270 should require a weekend ramp closure from southbound I-270 as crews will work to replace one of the joints at the end of the bridge.