The SR 410 detour arounds the Nile Valley Landslide.
Why is WSDOT
working to restore transportation along the Naches River?
On Oct. 11, 2009 a massive landslide demolished a mile of SR 410, 15 miles west of Naches. The landslide pushed millions of cubic yards of debris and pavement into the Naches River, destroying at least two homes and changing the river's course. Dozens of nearby residents were evacuated because of potential flooding. Gov. Gregoire proclaimed an emergency in Yakima County due to the damage.
SR 410 is closed between milepost 104, the west intersection of the Nile Loop Road, and milepost 108, the east intersection of the Nile Loop Road. To keep drivers safe after the landslide, WSDOT and WSP initially closed approximately 47 miles of SR 410 between Mount Rainier National Park's Tipsoo Lake (just east of the junction with SR 123) and the junction with US 12, five miles west of Naches.
The End Result
WSDOT and Selland Construction built a SR 410 detour using Nile Loop Road, part of the Yakima County road system.
We will work closely with local jurisdictions to develop a long-term fix for SR 410.
Project Benefits
Our long-term fix will restore a safe, reliable transportation corridor.
What is the project timeline?
- Oct. 11, 2009 - WSDOT and WSP closed approximately 47 miles of SR 410 following a massive landslide that destroyed a section of the highway.
- Oct. 13, 2009 - Selland Construction crews working for WSDOT began building a temporary roadway to restore emergency services and limited local access to the Nile Valley community. WSDOT shortened the SR 410 closure from 47 miles to four miles (milepost 104 to milepost 108).
- Oct. 20, 2009 - WSDOT opened emergency detour on Nile Loop Road to all drivers.
- Oct. 22, 2009 - WSDOT and Selland Construction started to build the 4,000-foot-long section of the SR 410 detour away from the river and landslide.
- Nov. 16, 2009 - Due to forecasted flooding, WSDOT shifted traffic onto the 4,000-foot-long SR 410 detour. Yakima County started cutting through the temporary detour on Nile Loop Road in two places to divert the river away from the base of the landslide.
- Nov. 17, 2009 - Yakima County started diverting the Naches River into new river channel.
- Nov. 18, 2009 - WSDOT in collaboration with the U.S. Department of Fish and Wildlife rescue and relocate fish stranded by diversion of water into the new river channel.
- Nov. 25, 2009 - WSDOT finished paving the SR 410 winter-durable detour.
Financial Information
This project was funded through federal emergency relief funds. WSDOT estimates the total cost for restoring temporary access for the SR 410 corridor, and completing the detour route is $13 million.
How can I get more information?
Contact:
Paul Gonseth, WSDOT Project Engineer
WSDOT South Central Project Office
P.O. Box 12560
Yakima, WA 98909
Phone: (509) 577-1811
Email: GonsetP@wsdot.wa.gov
Meagan McFadden, WSDOT Communications
P.O. Box 12560
Yakima, WA 98908
Phone: (509) 577-1618
Email: McfaddM@wsdot.wa.gov
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