Harlem Baden Sanitary Relief Phase 4 (11797)
As part of a long-term effort to reduce basement backups and sewer overflows, MSD Project Clear is designing a project to construct approximately 7,700 feet of stormwater sewers in the City of Hillsdale. The neighborhood is served by a combined sewer system that becomes overwhelmed during rainfall. The project will add a separate storm sewer to carry excess runoff to nearby stormwater detention basins.
About the Project
Project Map
What is the goal of this project?
MSD Project Clear is investing approximately $6.5 million in the City of Hillsdale to reduce overland flooding of nearby homes, yards and streets. By adding stormwater sewers, the project will relieve pressure on the existing combined system and improve how stormwater is managed during typical storms.
Project Facts
- Construction is estimated to begin in Winter 2025.
- MSD Project Clear will install approximately 7,700 feet of stormwater pipe ranging in size from 6 to 48-inches in diameter.
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 Darver Lane to avoid traffic interruptions.
Traffic and Access: As much of the construction will take place in streets, residents should expect temporary lane closures on St. Louis Avenue, Darver Lane, Crescent Avenue, Erick Avenue and other light impacts on streets that intersect with St. Louis Avenue. MSD Project Clear will maintain at least one lane of traffic at all times to allow residents to enter and exit.
Similarly, construction may lead to temporarily limited access to some properties along the construction route. Restrictions will be limited to active construction hours, and the contractor will notify property owners in advance of any access restrictions.
Restoration: After all new sewer pipes are installed, the contractor will restore the construction site according to all MSD and local 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.
- Estimated construction start: Winter 2025
- Estimated construction duration: 24 months
FAQs
MSD does not anticipate 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.
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.
In general, District policy is to restore affected areas to the same or better conditions than before the project. Streets that are disturbed through this project will be replaced and repaved with similar material. The project’s restoration will meet all local and District requirements.
During easement acquisition, an MSD Right of Way Agent will work with property owners to discuss restoration on their property. Most yard areas will be resodded with the same material. Driveways, walkways, and other hard surfaces will be restored using the same materials that are currently in place. In wooded ground areas, District policy is to seed the disturbed areas.
During active construction, 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 or place steel plates over trenches during non-working hours so residents can use their driveways during those times.
MSD will instruct its contractor to keep the site reasonably clean and clear of debris. MSD will have an inspector on site every day during active construction. Prior to the start of construction, MSD will give every resident and property owner along the construction site the inspector’s contact information. Community members are encouraged to bring any concerns to the on-site inspector or any other member of the project team.
Stay Informed
Andy Day
MSD Project Manager
aday@stlmsd.com
314-768-2799
Kevin Bielicki
J.H. Berra
kbielicki@jhberra.com
314-744-1589
