Tidal Basin Seawall Curved Concrete Path Washington DC United States // WASHINGTON, D.C. — Newly opened curved concrete paths line the southern corner of the Tidal Basin as part of the Tidal Basin Seawall Reconstruction Project, Monday, April 27, 2026. The National Park Service initiated this critical infrastructure overhaul to mitigate decades of land subsidence and rising sea levels that previously inundated the pedestrian walkways. Engineers utilized deep-driven pilings and reinforced concrete to elevate the new retaining walls, integrating resilient urban design while preserving the histor

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