The project: IMEG Studio led the cultural, archaeological, and natural resource investigations, and managed the public involvement program for the New Hampshire Department of Transportation’s New Castle-Rye Bridge replacement. The existing 1941 bridge had deteriorated significantly due to age and harsh maritime conditions, making rehabilitation no longer feasible.

The goal: The goal of the project was to replace the aging New Castle-Rye Bridge while ensuring that cultural, archaeological, and environmental factors were carefully considered. This included addressing impacts to natural resources, cultural heritage, and public engagement, as well as complying with state and federal regulations.

Design approach: IMEG Studio’s design approach involved a thorough evaluation of both natural resources and cultural heritage. The team coordinated with federal and state regulatory agencies to assess tidal wetlands, wetland functions, habitat mapping, and ecological impacts. They conducted surveys for listed plant species and sub-aquatic vegetation in Little Harbor and performed an Essential Fish Habitat Assessment, ESA Biological Assessment, and drafted an Environmental Assessment (EA) for NEPA compliance. The team also defined the area of potential cultural effects, prepared resource inventory forms, and oversaw a Phase 1A Archaeological Assessment. Additionally, IMEG worked closely with the New Hampshire State Historic Preservation Office (SHPO) to address the potential loss of a National Historic Register-eligible bridge and developed a mitigation plan to manage this impact.

Project outcome: The project successfully met its goal by addressing environmental, cultural, and regulatory requirements. IMEG Studio’s work provided critical data and assessments, including the Essential Fish Habitat Assessment and Biological Assessment, that helped guide the bridge replacement. The cultural resources team ensured that the impacts on historic resources were properly evaluated, and mitigation measures were proposed. The project was guided by an engaged Project Advisory Committee, ensuring that community and regulatory concerns were addressed throughout the process.