State Route 706 to Close for Culvert Repairs

Maintenance work will shutter access to the Mount Rainier National Park Nisqually entrance overnight on October 23.

Updated on Oct. 20, 2026 in National Parks

State Route 706 to Close for Culvert Repairs

Live Poll

Is the recurring overnight closure of major local roads a reasonable trade-off for necessary maintenance?

The Washington State Department of Transportation will close State Route 706 at Kernahan Road East from 9 p.m. October 23 to 6 a.m. October 24, 2026. This closure restricts access to the Nisqually entrance of Mount Rainier National Park.

Why it matters

Crews are rushing to address a failing culvert discovered on October 16 while working on a separate repair. Replacing these structures is essential for infrastructure stability, as roughly 1,500 state-owned culverts have reached the end of their lifespan.

The overnight project closes State Route 706 from 9 p.m. to 6 a.m. while crews replace a failing culvert. Drivers should anticipate continued gravel road conditions and reduced speeds east of Murray Road East following the repair.

The players

Washington State Department of Transportation

This government agency oversees the construction and maintenance of state roads, bridges, and infrastructure across Washington.

Mount Rainier National Park

Established as a national park in 1899, this site encompasses the iconic glacier-capped volcano and surrounding wilderness.

The details

Maintenance teams will remove the damaged culvert and install a new structure, covering the work with compacted gravel before the morning reopening. While general traffic will be blocked, the department has confirmed that emergency services will retain access during the closure.

October 16, 2026: Workers identified a second failing culvert requiring urgent attention.
October 23, 2026, 9 p.m.: State Route 706 closes at Kernahan Road East.
October 24, 2026, 6 a.m.: The road closure concludes and normal access resumes.

Travel Outlook

This project reflects a recurring challenge for regional infrastructure as agencies contend with thousands of aging conduits beneath mountainous roadways. This work follows the broader pattern identified in the Washington State Department of Transportation's aging culvert replacement backlog.

Travelers planning overnight trips to Mount Rainier National Park should adjust their schedules to avoid the October 23 closure window. Residents living east of the closure point must prepare for a temporary loss of westbound access until the work is completed Saturday morning.

The takeaway

Drivers should monitor official transportation alerts for updates regarding future paving projects on this route. Planning for delays near Murray Road East remains important even after the culvert replacement is finished.