City of Mishawaka – Third Street Sewer Improvement Phase I

City of Mishawaka

Cost: $5.5 million

More About This Project

Category: Construction Inspection, Survey (GIS), Transportation, Water Resources

The City of Mishawaka selected LFA to provide design and construction engineering services for Long Term Control Plan (LTCP) Third Street Sewer Improvement Phase I project. The project was intended to make improvements both above grade to City’s downtown streetscape and well as below grade for City’s Long Term Control Plan. This project phase is first of many phases to help provide additional conveyance capacity for wet weather flows and accommodate growth, while maintaining an acceptable level of CSO control.

The project consists of new storm sewer installation (up to 48-inch), new small and large sanitary sewer installation (up to 60-inch), CIPP Lining, sanitary sewer lateral replacement, new watermain installation, water service replacement, pavement reconstruction, new concrete curb and gutter, sidewalk, and streetscape improvements along with incidental construction on adjacent streets, and other pertinent work.

This project had multiple components. First was creating a brand new storm network and separating the connections from combined system of 5 blocks and connecting at existing storm network at the intersection of First Street and Spring Street. Last block of the storm network included upsizing of the pipe to include any extra capacity that City may need.  While the reconstruction of Spring Street occurred, additional coordination effort needed for City Hall project occurring adjacent to this project.

Second, a large 60” diameter separate sewer network was installed for 2 blocks of this project. Part of the installation, included directional boring around the existing utilities within the intersection of Main Street and Third Street. A casing pipe of 72 inches was installed under some major duct banks of AT&T, whose main hub was located near the project limits.

The third component of the project was creating a pedestrian friendly 8-foot path on a minimum one side of the project and in some areas on both sides to connect the downtown. A major master plan was created as part of the project to provide the beautification aspects to the streetscapes. Additional bumpouts at the intersections were created to provide pedestrian friendly crossings and to protect any on-street parking. As part of the project, beautifications to the tree lawn space with stamped concrete was provided.

A fourth component of the project was to improve the lighting and tree installations within the project limits. LFA coordinated with DLZ to provide appropriate tree species for City of Mishawaka’s request and improvement to the downtown area. LFA coordinated with Mishawaka Electric Department on multiple types of lighting set up within the project limits.

The fifth component of the project included upgrading an ADA compliant Signal upgrades within the limits of INDOT’s Right-of-Way at the intersection Lincolnway and Spring Street. Improvements included ADA curb ramps, pedestrian push buttons and re-configuration of the existing controller.

The last component of this project was to work with utilities to upgrade some of their infrastructure. LFA worked directly with AT&T to work around their duct banks and moving some of their facilities out of the way during construction in order to install necessary improvements. LFA was working closely with Mishawaka Water Department on the upgrade and upsize of their existing water main within the project limits. Due to issues with existing electrical puffers within the project limits, Mishawaka Electric Department and LFA coordinated on installation of the new conduit for multiple phases of the project. The work will continue into Phase 2 and 3 of the project in the future.

 

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