Engineering firm Stantec has been chosen to design the rehabilitation of the sewer tunnel running; with depths of up to 220 feet and limited points of access, the project requires carefully planned logistics and marks the largest and most complex linear infrastructure rehabilitation project ever awarded to the firm.

Stantec President and CEO Bob Gomes said “This project demonstrates the depth and breadth of our Environment practice. With the vast resources available to our employees across North America we have the capability to complete larger and more complex projects such as the West Roxbury Tunnel.”

The Massachusetts Water Resources Authority (MWRA) has given the tunnel project a high priority based on its critical service to as many as 125,000 homes and businesses. Stantec will be examining the conditions of the tunnel and exploring the viability of several rehabilitation or realignment options. Stantec will also manage the traffic control, permitting, surveying, hazardous materials handling, and other services related to the design and construction of the new or rehabilitated tunnel. The Massachusetts offices of Hatch Mott MacDonald and Brown and Caldwell are also key subconsultants on the engineering team.

“Rehabilitating or replacing this tunnel is a high priority for the MWRA and we’re glad to be able to contribute,” said Stantec's Project manager Bill Powers. “With so much focus lately on improving our country’s infrastructure, now is an especially opportune time for a job of this magnitude.”

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The MWRA is one of the ten largest water and wastewater utilities in the United States.