View entire mapThis project rehabilitated the deck on the Janis Bridge over the Okanogan River (MP 310.6 to .7).
View entire photo (Before) The bridge is located 4 miles South of Tonasket on US 97.
View entire photo(Before) The bridge deck is experiencing spalling and has areas of exposed rebar.
View entire photo (After) This is what the new bridge deck looked like on Friday, July 24, 2009 when the highway was reopened to traffic.
Project Complete July 2009
Construction began June 15 and was complete July 24, 2009.
This Structure Preservation Program project refurbished the Janis Bridge deck on US 97 over the Okanogan River between MP 310.6 and 310.7, four miles south of Tonasket.
Why is WSDOT
rehabilitating this bridge deck?
The bridge was constructed in 1957. The original deck concrete was cracked and spalling exposed the reinforcing steel. Our tests show that 4.2% of the deck is deteriorated. 2% is the threshold for repair. Deck repair and overlay were necessary to preserve this bridge deck.
The End Result
We ground off the top 1/2" of deteriorating concrete. Then a new 1-1/2" concrete overlay was applied to the bridge deck.
Project Benefits
- Provides a smoother, safer ride
- Preserves bridge life while minimizing maintenance costs
- Provides additional cover over reinforcing steel to decrease surface cracking
- Improves the structural integrity of bridge
What is the project timeline?
Construction began June 15th and was complete July 24, 2009.
Financial Information
The project was advertised for private contractor bids on November 17th, 2008. Four qualified bids were opened on December 11th. On December 15th, constract #7643 was awarded to Penhall Co. DBA Concrete Barrier Co. for $403,144.00, $185,000 (31%)under the engineering estimate.
The project is funded through the following sources:
Pre-Existing Gas Tax: $727,000
How can I get more information?
Contact:
Project Engineer Ken Olson
WSDOT Eastern Region Project Office
2714 North Mayfair Street
Spokane, Wa 99207-2090
Phone: 509-324-6140
E-mail: olsonk@wsdot.wa.gov
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