State Route 410 is badly damaged with limited access. When will it reopen?
AI-generated summary reviewed by our newsroom.
- SR 410 between Enumclaw and Greenwater closed after road fell into Boise Creek.
- WSDOT installed temporary emergency lane and schedules escorted local convoys.
- No reopening date; crews assess multi-highway damage and plan repairs.
A portion of Washington State Route 410 in King County between Enumclaw and Greenwater will remain closed after flood damage resulted in part of the road falling into Boise Creek, the Washington State Department of Transportation confirmed Tuesday.
The closure is from Farman Street North at milepost 25 in Enumclaw to just west of Mud Mountain Dam Road at milepost 43 in Greenwater, said WSDOT communications manager RB McKeon in an email. The road first closed Dec. 11 following heavy rain. Given the widespread damage across multiple state highways and time needed to scope repairs, WSDOT could not provide a date when the road would fully reopen, she said.
Rivers in Pierce and King counties might continue to flood this week as another strong weather system was expected to arrive Tuesday night, as previously reported by The News Tribune.
Crews have put up a temporary emergency lane on SR 410 to reduce weight on the damaged roadway, McKeon said. The lane will “allow limited, controlled access for emergency services and local traffic only, which is being convoyed via the Greenwater Fire Department at scheduled departures throughout the day,” she said.
WSDOT has been working closely with partners in Greenwater, especially the Greenwater Fire Department, to help residents navigate the area while crews assess damage and restore immediate access while simultaneously planning for longer-term repairs, McKeon said.
The Enumclaw Police Department shared a photo on its Facebook page Monday showing parts of the eastbound lane at milepost 26.6 near Boise Creek collapsing into the water. McKeon said WSDOT is working to re-establish limited, single-lane access on the westbound lane with temporary traffic signals that will alternate eastbound and westbound traffic using one lane.
“Crews moved quickly to construct the temporary lane, demonstrating the urgency of the response,” McKeon said. “However, returning the highway to its pre-storm condition will require additional time and a more comprehensive repair approach.”
This story was originally published December 16, 2025 at 3:20 PM.
