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South Wetlands Park

The South Philadelphia Wetlands Park is a testbed for innovative adaptive reuse techniques and technologies that could serve as a unique model for urban ecological restoration.

As part of the Delaware River Waterfront Corporation’s effort to turn abandoned areas along the Delaware River into a thriving park system, KCI, formerly McLaren Engineering Group, and the project team focused on design concepts for Piers 64, 67 and 70. The concepts blended public access with the creation of terrestrial and aquatic habitats intended to strengthen resiliency and support ecological vitality in the area.

Working with the public to develop an ecological, community-centered park, the team explored concepts that used natural processes for riverbank stabilization and innovative wave-energy dissipation to support a more resilient waterfront.

The project team evaluated design alternatives that considered pier reconstruction, vegetation, habitat creation, boardwalk alignment, and wave attenuation strategies. These alternatives included linear and curved boardwalk options connecting the piers, as well as a deep breakwater, wave screen, and upland habitat. Each concept was developed to provide a nature-based public space with a refined framework, resilient ecology, and access for all.

South Wetlands Park Flood Rendering

Park Inspection + Coastal Analysis

We performed underwater inspections to review the existing conditions and investigated whether any part of the failing pier could be salvaged for the waterfront habitat and urban park. The investigation found that most of the inspected structures were in severe or critical condition and due to their condition at the time, public access wasn’t recommended.

We reviewed the high-tide effects on the piers at the time of the study, as well as projected effects 45 and 60 years into the future with sea-level rise, to analyze the impact the various designs would have on the city. The piers were also analyzed for a 100-year storm event, a 500-year storm event, and the effects of a 100-year storm projected 60 years into the future.

Resiliency Planning in South Philadelphia

With public access hindered at the time, the degrading piers could promote sediment deposition and attenuate wind and wakes from north and south of the piers, thus improving resiliency. So, we suggested leaving the piers to degrade over time, as it could support resiliency and native habitat in the future. Other alternatives like pier in-place maintenance were reviewed and didn’t appear feasible for the expected lifespan of the proposed improvements.

Demolition of the existing structures or partial demolition with substructure improvements was suggested as the best path forward.

Coastal Study

We performed a limited coastal study to investigate wave action within the pier area. Due to the existing shallow depths found, we expected the site to have low to moderate wave heights and negligible current influence closer to shore where wetland habitats were proposed. Wave attenuators could include breakwaters, sills, wooden planks between pilings of boardwalk, mussel reefs, or coir logs. A combination of these elements to protect different areas across the site would be ideal and more engaging.

We’re excited to share that McLaren Engineering Group is now part of KCI Technologies Inc., a 100% employee-owned firm offering engineering and consulting across all markets, and construction for communications and environmental projects.

Our commitment to excellence continues with the added strength of KCI’s full range of engineering and consulting services.

Visit KCI’s website to learn more.