Overview
This Preservation project stabilized a rock slope on US 2 in Tumwater Canyon in western Chelan County. On Jan. 5, 2006 a rock fall event occured at this location involving 100 cubic yards of rock and debris (that's ten dump truck loads!) Several of the largest rocks reached the roadway blocking both lanes to traffic for hours. Other nearby slopes from MP 91.2 to 91.5 are programmed for stabilization over the next several years. However, it was determined that this location, MP 91.4, needed to be addressed first. Click here for more information about WSDOT's slope stabilization program.
Construction began March 31 and was complete in 15 working days, on April 18, 2008. Hand scaling, installation of horizontal drains and rock bolts were used to stabilize the slope.
Photos of the work are posted on the WSDOT Flickr web site.
 | Improves Safety
Stability of this rock slope was increased, providing safer driving conditions on US 2.
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 | Economic Incentive
As one of the primary highway accesses to North Central Washington from the Puget Sound area, maintaining a safe roadway for commercial vehicles and those coming to this tourist dependent region is critical.
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Partnerships & Cooperation
Funding
This project was advertised for private contractor bids on October 15th, 2007. Three bids were opened on November 15th. Contract #7436 was awarded to the low bidder, L.R.L. Construction Co. for $135,446.00, 7% under the engineering estimate.
This project is funded through the following source:
Pre-Existing Gas Tax - $329,000
Total funding from all sources - $329,000
Contact Us
Terry Mattson, Consultant Manager Project Engineer
WSDOT North Central Region
P.O. Box 98
Wenatchee, WA 98807
Phone: (509) 667-3000
Email: MattsoT@wsdot.wa.gov
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