Abigail Stuckrath

| abigail.stuckrath@wtop.com

The National Park Service announced that the first step in protecting D.C.’s Tidal Basin from flooding and aging infrastructure has finished eight months ahead of schedule.

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The now completed reconstruction of the Tidal Basin sea wall is one of the two phases in the project dedicated strengthening the shoreline around the Jefferson Memorial, the Martin Luther King Jr. Memorial and the cherry blossom trees, according to a National Park Service news release on Wednesday.

The original sea wall was built in the late 1800s and early 1900s. After over a century, the south side wall had settled more than five feet, leaving the famous cherry blossom trees, monuments and walkways victim to frequent flooding.

The NPS said the new sea wall has deeper foundations, wider walkways and a resilient infrastructure that can handle stronger storms and rising sea-levels.

The next phase? To plant over 400 new trees, including almost 270 additional cherry blossom trees.

The overall project is expected to finish eight months ahead of schedule and $30 million under budget in May of 2026, officials said in the release.

The south side portion of the Tidal Basin and parts of the West Potomac Park will remain closed through the 2026 National Cherry Blossom Festival but will reopen shortly after when the replanting is completed.

The reconstruction is funded by the Great American Outdoors Act and supporting the executive order on Making the District of Columbia Safe and Beautiful.

In 2024, the National Park Service removed over 300 trees for the reconstruction, including the famous cherry blossom tree, Stumpy.