Jefferson Memorial Tidal Basin New Seawall Path Washington DC United States // WASHINGTON, D.C. — Newly opened pedestrian paths line the southern corner of the Tidal Basin following a major seawall reconstruction project near the Thomas Jefferson Memorial, Monday, April 27, 2026. The original stone seawalls, constructed in the late 19th century, had sunk nearly five feet due to severe subsidence and rising water levels. This National Park Service rehabilitation effort stabilizes the shoreline infrastructure while preserving the site's neoclassical focal point, designed by architect John Russel

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