Herring River Salt Marsh Restoration

The Herring River Restoration Committee (led by MA DER, NOAA, NPS, and USFWS) and Conservation Law Foundation selected Fuss & O’Neill to lead the design of a $15 million green infrastructure project of a new bridge structure and two secondary dike structures across Mill Creek.

The purpose of this project is to replace an existing causeway with a bridge structure to allow gradual restoration of tidal flows to restore 1,100 acres of former salt marsh. This is the largest salt marsh restoration project ever undertaken in the Northeast. A major element of this project is to develop a bridge structure with a 160-foot span at the mouth of a coastal river in a manner that allows National Park Service scientists to control flows into the marsh system and provides future flood protection for homes and infrastructure around the restored marsh area. As a result, the bridge design is one of a kind and includes removable flood panels that can be inserted through the bridge as well as slide gates in some of those panels to provide more finite controls.

Workshops were conducted with stakeholders to review alternatives and to obtain critical feedback that allowed our team to refine the configurations and evaluate costs, impacts, and benefits. Carefully prepared reports, alternatives assessments, and cost/impact evaluations documented efforts through all phases off the feasibility studies. These reports were prepared in a manner to facilitate inclusion into later permitting and regulatory compliance filings.