Clark Avenue Sanitary Relief (12122)
As part of a long-term effort to reduce basement backups and overcharged sewers, MSD Project Clear is replacing undersized wastewater sewer in the City of Webster Groves.
MSD Project Clear will increase the size of the sewer system in this neighborhood. This will increase the capacity the system can handle and reduce basement backups in this area.
This project is currently in the Design phase. The Consultant selected for this project is Kowelman Engineering, Inc. Construction is currently expected to begin in Summer 2024.
About the Project
Project Neighborhood Meeting
What work is being done?
- MSD Project Clear is replacing of approximately 1,172 feet of wastewater pipe.
- The pipe size will increase to 15 inches in diameter allowing a larger amount of wastewater to flow through the system.
- The project will be located in an area west of Big Bend Boulevard and north of Interstate 44.
Why is MSD designing this project?
MSD Project Clear is investing approximately $1.1 million into the sewers in the City of Webster Groves with this project to alleviate basement backups. As a part of their evaluation, our team of Engineers reviewed customer complaints in this neighborhood and determined that the existing wastewater sewers servicing this neighborhood are undersized and become overcharged when it rains.
In addition to creating cleaner creeks and streams, the new sewer will also reduce the likelihood of basement backups for residents and businesses in this neighborhood.
How will it be built?
This project will be constructed by digging through the surface, a process known as “open-cut.” The contractor will dig a trench several feet into the ground, remove the old sewer pipe, and replace it with a newer, larger pipe.
What can residents expect?
With any type of construction, residents can expect to see and hear heavy equipment during the sewer excavation process. The pictures above depict what a neighborhood will look like before, during, and after a typical open-cut project.
TRAFFIC: MSD Project Clear does expect traffic disruptions as a part of this project. There will likely be a temporary closure on Marshall Avenue, west of North Laclede Station Road. To a lesser extent, traffic on Clark, Yeatman, and Brookside Avenues will also be impacted. Once the project moves into the Construction phase and a Contractor is selected, more details about a traffic mitigation plan will be shared with affected residents.
PROPERTY ACCESS: Some residents may experience temporary access restrictions to their driveways. The contractor will give all property owners ample notification prior to access restrictions and will ensure access during non-working hours.
RESTORATION: After all new sewer pipes are installed, the contractor will restore the construction site according to all local and District requirements. This could include sodding any disturbed areas, replacing disturbed pavement, reinstalling fences, etc.
At least one MSD Inspector will be on-site part of the day for every day the contractor is working.
What is the timeline?
This is the current tentative project schedule. This is subject to change based on a variety of factors, including weather.
- Design phase completion: Summer 2022
- Easement acquisition: Summer 2023
- Estimated construction start date: Summer 2024*
- Estimated construction duration: Approximately 12 months
*Anticipated construction start date is subject to change. MSD will notify residents before beginning construction.
MSD does not anticipate sewer service or other utility services being disrupted during this project. We will work with Missouri One Call to locate utilities before beginning construction. Occasionally, the contractor may run into utilities that were not located by Missouri One Call which could result in temporary utility disruptions. If this happens, MSD will work with the utility to restore service as quickly as possible.
Some property owners may experience driveway access restrictions for a short period of time. The contractor will notify property owners in advance of any temporary access restrictions to allow them time to move their vehicles. The contractor will also fill trenches with gravel during non-working hours so property owners can use their driveways during those times.
Trees may need to be removed to construct parts of this project. If there are good options to avoid removing trees, MSD will make every attempt to do that. Property owners with trees that will need to be removed that are not located in already existing easements will have been compensated for the removal through the easement acquisition process.
Dennice Kowelman, PE
Kowelman Engineering Project Manager
Sam Bush, MSD Project Manager