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US 2 - Wenatchee River Bridge - Complete October 2014

November 2013
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This project replaced the green steel bridge at the top of Tumwater Canyon (MP 90.57-90.62), nine miles west of Leavenworth in Chelan County.

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  June 2013 After the new deck was poured.

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June 2013 Before pouring the new bridge deck.

Aug. 2012 - old & new Wen. River Bridges
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-August 2012-Crews install a pier in the river for the new Wenatchee River bridge while traffic continued to flow on the old one.

Both Bridges-Fall 2012-Under View
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- Several weeks later, that pier was holding up a bridge.

Both Bridges-Fall 2012-Top view
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- The view from above.

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2011-Before-The new bridge is wider and doesn't have an overhead superstructure.

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  2011-Before-The new bridge doesn't have footings that catch logs and debris like this one does.

Aug. 2012 - Drury Ck. Bridge- Before
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- 2012-Before-The Drury Creek Bridge was replaced in late summer, 2013.


Complete October 2014

The bridge construction was complete in November 2013 and removal of the old Green Bridge at the top of Tumwater Canyon was accomplished in October of 2014.

This project, under the name US 2 – Tumwater Canyon Bridge Replacements, included two other bridges: The Chiwaukum Creek Bridge, located 3/4 of a mile to the west and the Drury Creek Bridge, two miles to the east. The project also included an Additional Turn Lanes project at the Tumwater Campground.


This Catastrophic Reduction Structure Preservation project replaced an old bridge on US 2 at the top of Tumwater Canyon, nine miles west of Leavenworth in Chelan County, as well as a smaller one over Drury Creek, two miles further east.

Why is WSDOT replacing bridges in Tumwater Canyon?
The "Green Bridge" over the Wenatchee River at the top of the canyon was a 263 foot long steel truss/concrete girder structure rated structurally deficient and functionally obsolete. That means it failed to meet current design standards for things such as lane widths, shoulders and sidewalks.  Originally built as a railroad bridge in 1900, it was moved to this location in 1936 and converted to a highway bridge.  The age and structure type didn't allow for widening and it had to be replaced. 
The 22 foot long,Drury Canyon Creek Bridge, about 2 miles east on US 2, was built in 1937 and was also replaced as part of this project due to the affect of years of "scour" on the bridge footings. That bridge was retrofitted by removing the existing deck and setting a new box culvert between the abutment walls. The new structure will requires no footings in the creek. The new deck has 12 foot lanes and 8 foot shoulders instead of 2. 

The End Result
The Green Bridge's replacement included two 12-foot lanes with an eight foot westbound shoulder and ten foot eastbound shoulder. The old bridge had two 12-foot lanes and no shoulders.  The new structure also spans a greater distance across the Wenatchee River with fewer footings, improving river flow and reducing the need to clear debris (logs jams, etc.) after high water events.

Project Benefits

  • Very little traffic impact during construction as the current bridge remained in use while the new bridge was built alongside.
  • Provides wider shoulders on the bridge deck so vehicles can pull over. 
  • Oversize loads are better accommodated with a wider bridge and elimination of an overhead superstructure. 
  • Provides an eight foot westbound shoulder and ten foot eastbound shoulders better accommodating bicycles and pedestrians.
  • The new bridge accumulates less debris on the footings by increasing the span length across the river.  
  • The new concrete girder structure also eliminates the need to regularly repaint the bridge.

What is the project timeline?
Construction started August 1, 2011 and was planned to take 275 working days to complete in the November of 2013. Demolition of the old bridge was complete in October 2014.

Financial Information

Financial Data for PIN 200201K
Funding Source Amount ($ in thousands)
2003 Gas Tax (Nickel Funding) $0
2005 Gas Tax (TPA) $539
Pre-Existing Funds (PEF) $8,054
CWA $0
Total $8,593

Project signage will reflect the cost of construction engineering, project bid award and sales tax.

This project, under the name US 2 – Tumwater Canyon Bridge Replacements, includes two other bridges at Chiwaukum Creek  and Drury Creek, as well as new turn lanes into Tumwater Campground.

The combined project was advertised for private contractor bids April 18, 2011. 9 qualified bids were opened on May 19. Contract #8139 was awarded to Selland Construction, Inc. of Wenatchee for $8,485,707.28 on June 24, four percent under the engineering estimate.

How can I get more information?
Josh Patrick, Project Engineer
WSDOT North Central Region
2830 Euclid
Wenatchee, WA 98801
Phone:  (509) 667-2880 or toll free (888) 461-8816

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