First Lieutenant Derek S. Hines Memorial Bridge Project

Location: Merrimack River - Amesbury, Massachusetts
Contract Value: $30,700,000
Project Dates: March 2010 – July 2012


This Design-Build project is located in the Town of Amesbury, Massachusetts.

The Derek S. Hines Memorial Bridge carries Main Street over the Merrimack River between Amesbury and Salisbury.  It is a major roadway that serves the nearby businesses in Amesbury, Newburyport, and Salisbury. 

The bridge is comprised of one steel framed swing span with one steel girder framed approach span at each end, forming a four-span bridge.  The swing span is supported on a stone masonry pivot pier.  The two approach spans are supported on stone masonry abutments and the two rest piers for the swing span.  The abutments are adjoined by rubble masonry wingwalls that are either parallel or perpendicular to the roadway.   The existing superstructure was constructed in 1966.

The contract called for the complete design and replacement of the bridge, including the bridge structure and related roadway approaches.  The project included working within the navigable channel to perform demolition and installation of cofferdams, deep foundations, concrete piers and finish aspects of the bridge.

This project required coordination with MassDOT’s Environmental Services Division and various applicable environmental agencies, including the US Army Corps of Engineers and the US Coast Guard.  Permit amendments and approvals which needed to be acquired by the D-B Team included a U.S. Coast Guard Permit Amendment, MA DEP Section 401 Water Quality Certification Amendment, Confirmation of CZM Federal Consistency Determination, Coordination with MA Division of Fisheries and Wildlife, Natural Heritage and Endangered Species Program, and NOAA Marine Fisheries Service for compliance with Section 7 of the Endangered Species Act.

The Hines Bridge is located within a designated historic site.  Maintaining all existing features of the bridge to the greatest extent possible was important to the Amesbury Historical Commission (AHC), and we worked to meet their strict requirements and preserve the historical integrity of the bridge structure within the new design.