Larimore Storm Sewer (11530)

As part of our efforts to reduce basement, road, and yard flooding, MSD Project clear is designing a project to install stormwater sewers and related infrastructure in the Spanish Lake area.

This project is estimated to begin construction in Winter 2022/2023.

MSD Project Clear is investing approximately $2.5 million to design this project to install stormwater inlets, pipe and related infrastructure in this neighborhood. This project will help alleviate instances of road, yard and basement flooding. The project team will also grade parts adjacent to streets to direct the flow towards the inlets.

• Construction is estimated to begin Winter 2022/2023.
• MSD Project Clear will install approximately 4,400 feet of stormwater sewer.
• The pipe size will range from 12 to 54-inches, allowing a large amount of runoff to flow through the system.
• Stormwater inlets will also be installed, with grading to direct runoff towards the inlets.

Though construction for this project is not estimated to begin until Winter 2022/2023, it is important to be prepared for what to expect. By the Spring of 2022, residents whose property will need to be accessed to construct the project will be contacted in order to obtain necessary easements.

Type of Construction:

While the exact methods of construction will be determined as the project moves towards the Construction phase, just like with any type of construction, residents can expect to see and hear heavy equipment during the sewer excavation process. The majority of this project will be constructed by a method known as “open-cut construction”. This means that crews will dig through the surface of the ground to excavate and install pipe.

Traffic Impact: 

As a part of this project, MSD Project Clear does expect traffic impacts to roads in this area. Temporary road closures are expected but the construction crews will work diligently to keep these closures during work hours. One lane of traffic will be maintained at all times. More specific information including timing and locations of these closures will become available once the project has a Contractor and they can determine a set schedule.

MSD Project Clear does expect times of temporarily reduced access for residential and commercial properties throughout the construction of this project. However, these timings will be temporary and the Contractor will work to minimize these instances.

Restoration:

The Contractor will restore the construction site according to all District and local requirements. This could include sodding any disturbed areas, replacing disturbed pavement, reinstalling fences, etc. More detail on this will become available after a Contractor is selected for the project ahead of construction.

This is the current tentative project schedule. This is subject to change based on a variety of factors including weather.

• Project design completion: May 2021
• Easement acquisition completion: Spring 2022
• Estimated construction start: Winter 2022/2023
• Estimated project duration: 18 months

Larimore Design Public Meeting Presentation

Jennifer Gerwitz
MSD Project Manager
jgerwitz@stlmsd.com
314-335-2036

Josiah Holst
HR Green Project Manager
jholst@hrgreen.com

Please mention the Project Number: 11530