sewer pipe being lifted in contruction

Oak Creek SW MIS Extension Project

Project Overview

The Oak Creek Southwest Metropolitan Interceptor Sewer Extension is a sewer extension project to provide sewer service to the southern-most areas of Milwaukee County and northern Racine County.  This project began as a request from the City of Oak Creek, City of Franklin, Village of Raymond, and the Village of Caledonia in 2014.  The extension was included in MMSD’s 2050 Facilities Plan and Capital Improvement Budget.

In 2022, MMSD began the design of the project, which extends the 24-inch sewer from Oakwood Road to the county line to serve the Village of Raymond and the Village of Caledonia.  The City of Franklin and the City of Oak Creek will also be connected to the sewer extension once it is completed.  Concurrent to this planned MMSD project, a private development has been proposed within the 27th Street corridor.  MMSD is working with the developers and municipalities to coordinate the activities of the two projects.

The proposed sewer extension will be constructed in the median of 27th Street and will be approximately a mile long.  The sewer depth ranges between 25 and 85 feet deep and will be constructed using microtunneling methods.  The photos below are examples of the micro-boring machine and support structures from similar projects that used a micro-tunneling method.

The design is anticipated to be complete in late 2025, and the construction is expected to be complete in 2027.

Project Map

Project Goals

  • Expand sanitary sewer service in both Oak Creek and Franklin.
  • Lay the foundation for future expansion of sanitary sewer service in the Village of Raymond and the Village of Caledonia in Racine County

Timeline*

  • Design – 2024-2025
  • Begin Construction – 2026
  • Complete Construction – 2027

*Timeline subject to change

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    Tunnel boring machine.

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    Example of the micro tunneling machine breaking through the shaft.

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    Work crew lowered into shaft.

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    Lowering pipe into work shaft.

Partner List 

Comments/Questions

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