Seven Mile Bridge Project Development & Environment Study

Ardurra leads the Project Development and Environment (PD&E) Study for the iconic Seven Mile Bridge replacement on SR 5/US-1 Overseas Highway, spanning Little Duck Key to Knights Key over the Moser Channel in the Florida Keys. This critical infrastructure project addresses structural deterioration while enhancing emergency evacuation capabilities and improving accessibility for pedestrians and bicyclists connecting the Florida Keys to mainland Florida.

The PD&E Study evaluates multiple bridge replacement alternatives while maintaining the Moser Channel USCG Navigable Channel, incorporating cutting-edge sustainability strategies and extensive environmental stewardship. The project requires complex coordination with the Florida Keys National Marine Sanctuary, NOAA Fisheries, the US Fish and Wildlife Service, the US Coast Guard, the US Army Corps of Engineers, and other federal agencies to ensure comprehensive environmental protection.

Key Project Development Services:

• Leading PD&E Study for iconic Seven Mile Bridge replacement, addressing structural deterioration and substandard elements

• Enhancing emergency evacuation capabilities while improving pedestrian and bicyclist accessibility across the critical Keys transportation link

• Evaluating advanced construction materials, exploring corrosion-resistant technologies, and extending new bridge service life in the marine environment

• Incorporating dry bioretention islands for stormwater management, removing pollutants and metals while promoting natural habitats

• Coordinating extensive agency consultation with the marine sanctuary, fisheries, wildlife, Coast Guard, and Corps of Engineers

• Managing comprehensive public engagement through Project Advisory Group, Environmental Forum, and stakeholder outreach initiatives

• Developing coral relocation partnerships with local volunteers coordinating soft coral relocation during construction activities

The project integrates innovative sustainability strategies, including In-Lieu Fee Mitigation programs, addressing multiple environmental projects throughout the Florida Keys. Comprehensive environmental stewardship ensures the protection of unique ecological treasures while improving critical infrastructure that supports public safety, emergency response, and regional connectivity for this vital transportation corridor.