- Check out this week's traffic impacts
- Traffic has been shifted onto a temporary, one-lane detour bridge while crews build a new, permanent structure.
- Construction began Aug. 6. More info...
- This project was awarded on May 24 to Cascade Bridge, LLC., with a winning bid of $5.7 million.
This project replaces the existing US 101, Bone River Bridge (mileposts 45.10 to 45.35) with a new 36-foot-wide structure consisting of two 12-foot-wide lanes with six-foot-wide shoulders.
The new bridge will help improve safety and increase mobility on US 101 in Pacific County.
During construction, WSDOT will build a temporary one-lane bridge on the west side of the existing Bone River Bridge to detour traffic around the work zone.
Why is WSDOT
constructing a new US 101, Bone River Bridge?
The existing bridge was constructed in 1935 of timber trestles.
The bridge is aging and too narrow to accommodate the types or number of vehicles that need to cross it today. It also does not meet current federal seismic, flood, or structural standards.
WSDOT is replacing the existing structure with a new bridge span built of concrete girders. The new bridge will enhance safety and allow US 101 to remain a viable West Coast freight route.
The End Result
A wider, safer bridge that accommodates today's traffic and meets current federal seismic, flood and structural standards.
- Safety: Improves safety and drivability by constructing a wider roadway, and installing concrete road barriers and new bridge railings.
- Mobility: Provides a wider structure for motorists and allows traffic to flow smoothly across the bridge without delay.
- Environmental: Removes more than 70 creosote-treated timber piles from Bone River and restores an estimated 82 square feet of streambed. The project also improves the river channel under US 101.
What is the project timeline?
- 2008: Preliminary design and environmental documentation begins.
- Spring 2011: Right-of-Way Acquisition process begins.
- Winter 2011: Design work and Right-of-Way Acquisitions completed.
- Spring 2012: Project advertised to contractors.
- Summer 2012: Construction scheduled to begin.
- 2014: Construction scheduled for completion.
Project signage will reflect the cost of construction engineering, project bid award and sales tax.
|Financial Data for PIN 410194A
||Amount ($ in thousands)
|2003 Gas Tax (Nickel Funding)
|2005 Gas Tax (TPA)
|Pre-Existing Funds (PEF)
How can I get more information?
Area Engineer Lori Figone
WSDOT Kelso Area Engineering Office
2400 Talley Way
Kelso, WA 98626
Phone: 360-442-1341, or toll free 1-800-545-1393
PO Box 1709
Vancouver, WA 98668-1709
or access our project feedback form.
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