News Release
NPS
News Release Date: September 1, 2026
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McLean, Va. — The National Park Service (NPS) is advising motorists that the existing full northbound closure of the George Washington Memorial Parkway between Spout Run Parkway and Route 123 will continue through September 17, 2026. The northbound closure, which began August 10, will continue Mondays through Thursdays from 9:30 a.m. to 2:30 p.m. All northbound traffic will be detoured around the closure.
Beginning September 21 and continuing through October 29, 2026, all southbound lanes of the George Washington Memorial Parkway between Route 123 and Spout Run Parkway will be closed Mondays through Thursdays from 9:30 a.m. to 2:30 p.m. Crews will conduct tree assessments, pruning and tree removal along the parkway.
Detour routes are shown in the maps above; drivers should follow posted signs.
Northbound lanes between Spout Run Parkway and Route 123 will close:
Mondays through Thursdays
9:30 a.m. to 2:30 p.m.
August 10 – September 17
Southbound lanes between Route 123 and Spout Run Parkway will close:
Mondays through Thursdays
9:30 a.m. to 2:30 p.m.
September 21 – October 29
The schedule is weather dependent and may change as conditions require. The parkway will remain open in both directions during morning and evening rush hours.
Drivers should plan ahead, expect delays and allow additional travel time. Motorists should consider alternate routes during the closure periods, slow down, remain alert and follow posted signs and directions from workers. Work zones may include crews, vehicles and equipment on the roadway.
The work is part of ongoing maintenance efforts to improve safety and to maintain a resilient transportation corridor while protecting the parkway’s natural and cultural resources.
Why Tree Maintenance Matters
Trees along the parkway require regular inspection and care. Crews will assess tree conditions, prune branches and remove trees when necessary. This work supports the long-term health of the parkway’s landscape and surrounding natural areas.
NPS
About the George Washington Memorial Parkway.
The George Washington Memorial Parkway is a scenic roadway honoring the nation's first president while preserving significant cultural and natural resources along the Potomac River from Great Falls to Mount Vernon. The parkway serves millions of visitors and commuters each year and remains an important transportation corridor in the Washington metropolitan area.
About the National Park Service.
Established in 1916, the National Park Service preserves America’s most treasured natural and cultural places for the enjoyment, education and inspiration of current and future generations. Learn more at nps.gov.
Last updated: September 1, 2026