Owner: Lynn Water and Sewer Commission

Partner: Methuen Construction

Location: Lynn, Massachusetts

Project Description: HB Fleming constructed five cofferdams to allow construction of a new pump station along with launching/receiving pits for a micro-tunneling operation. We drove 150 piles to support the new pump station.

Challenge: The project required excavating 40 feet deep in soft clay.

Solution: We had to excavate in the wet to limit soil pressures, and multiple-phased cofferdams were required to accommodate large changes in footing elevations.