Main Interceptor Rehabilitation and Combined Sewer Outfall Improvements Project

Current Work and Traffic Information:

Mill River Corridor 

There will be intermittent lane shifts and lane closures within the project area, which runs along the Mill River extending from the intersection of Mill Street and Main Street to the intersection of Rifle Street and Chester Street. A map of the project area is included below.

Connecticut River Walk and Bikeway

Work to repair three Combined Sewer Outfalls along the Connecticut River is ongoing. For the safety of pedestrians and bicyclists, the Connecticut River Walk and Bikeway will be closed from Liberty Street to Riverfront Park while this work is ongoing. Signs are posted to indicate the area where the path is closed.

Click here for a map of the area.

About the Project:

The Main Intercepting Sewer (MIS) is one of the most critical pipes within the sewer collection system, carrying flows for more than 60% of the City of Springfield. Average flows in the MIS exceed 20 million gallons per day. Inspection of the MIS as part of the Wastewater Collection System’s Asset Management and Maintenance Program indicated that the pipe required immediate rehabilitation in order to continue to provide service. Combined Sewer Outfalls at Worthington Street, Phelps Street, and Longhill Street were also identified as in need of repair.

The Main Interceptor Rehabilitation and Combined Sewer Outfall Improvements Project consists of rehabilitating 3,200 feet of 60 and 66-inch diameter sewer pipe and associated manholes, and work to rehabilitate and repair three CSO structures along the Connecticut River.

The project was advertised for bids in early 2015 and was awarded to P. Gioioso and Sons, Inc. of Hyde Park, MA. Construction began in the spring of 2015 and is expected to be complete in 2017. As specific dates for work are finalized, this and any relevant traffic information will be added to this page. As work progresses this page will continue to be updated, so please check back frequently.

The majority of construction will occur along the Mill River which runs parallel to Locust Street and Mill Street. Click on this map to view the construction area and intersections where traffic delays are anticipated during construction:

Main Interceptor Traffic Map

Public notifications will be issued to the news media, residents, and businesses in advance of construction activities that are anticipated to impact traffic and utilities. Traffic will be managed with posted signs and police details. Some work required for this project will occur during the overnight hours. Residents and businesses will be notified in advance of atypical work hours.

The total project cost is estimated at approximately $23.4 million.