Projects

As part of a long-term effort to reduce basement backups and sewer overflows, MSD Project Clear is constructing a project to replace approximately 14,000 feet of undersized wastewater sewers and construct approximately 400 feet of creek bank stabilization in unincorporated St. Louis County.

About the Project

What is the goal of this project?

MSD Project Clear is investing approximately $9,568,232.00 to improve the wastewater sewers and prevent creek bank erosion in unincorporated St. Louis County. The goal is to reduce basement backups and sewer overflows, which occur when the sewers become overloaded during intense rainfall. MSD Project Clear has received more than 27 complaints. The project will reduce such occurrences by increasing the size and capacity of the existing sewer. In addition, the creek in this area is experiencing erosion.  This project will stabilize the creek bank to improve water flow and protect some of the nearby private properties from creek erosion.

Project Facts

• Construction is estimated to begin as early as Spring 2025
• MSD Project Clear will replace approximately 14,773 feet of wastewater pipe.
• MSD Project Clear will stabilize approximately 425 feet of natural creek bank using a variety of stabilization methods.
• MSD Project Clear will repair and intercept overbank erosion and extend the existing storm sewers.
• The pipe size will be between 8 and 36-inches in diameter, allowing a larger amount of water to flow through the system.

What can residents expect?

This project will be constructed using both an “open-cut” method and tunneling. During open-cut, digging is performed through the surface of the ground. The pictures above depict what a neighborhood will look like before, during and after a typical open-cut project. Tunneling will be used under Interstate 270 and Tesson Ferry Road to avoid traffic interruptions.

With any type of construction, residents can expect to see and hear heavy equipment during the sewer excavation process.

Traffic and Access: Most of the construction will take place in the backyards of properties, so any traffic disruptions will be limited to the crossing of neighborhood streets.

Residents and/or property owners along the construction path should move the small portable items outside of the easements and inform MSD of dog fences, sprinklers, and other underground assets.

Restoration: After construction is complete, 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 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.

• Estimated construction start: Spring 2025
• Estimated project duration: 36 months