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US 101 - Middle Nemah River Bridge Replacement - Completed May 2014

This project replaced the existing US 101, Middle Nemah River Bridge (milepost 33.84) with a new 36-foot-wide structure consisting of two 12-foot-wide lanes with six-foot-wide shoulders. The new bridge helps improve safety and increase mobility on US 101 in Pacific County.

Why is WSDOT constructing a new US 101, Middle Nemah River Bridge?
The old bridge, built in 1935 was too narrow to accommodate the types or number of vehicles that need to cross it today. It did not meet current federal seismic, flood, or structural standards. WSDOT replaced the existing structure with a new bridge span built of concrete girders. The new bridge enhances safety and allows 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. 

What is the project timeline?

  • 2009: Preliminary design and environmental documentation begins.
  • Spring 2011: Right-of-Way Acquisition process begins.
  • Winter 2011: Design work and Right-of-Way Acquisitions completed.
  • August 2012: Project awarded to contractor SB Structures LLC.
  • Spring 2013: Construction began.
  • 2014: Construction scheduled for completion.

How You Benefit
Cross GlyphImproves Safety
Improves safety and drivability by constructing a wider roadway, and installing concrete road barriers and new bridge railings.
Car GlyphRelieves Congestion
Provides a wider structure for motorists and allows traffic to flow smoothly across the bridge without delay.
Leaf Glyph Protects Environment
Removes approximately 44 creosote-treated timber piles from Middle Nemah River and restores an estimated 28 square feet of streambed. The project also improves the river channel under US 101.

Partnerships & Cooperation


Financial Data for PIN 410104A
Funding Source Amount ($ in thousands)
2003 Gas Tax (Nickel Funding) $0
2005 Gas Tax (TPA) $776
Pre-Existing Funds (PEF) $4,107
Total $4,882

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

Contact Us
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

Magan Reed
WSDOT Communications
11018 NE 51st Circle
Vancouver, WA 98682
Phone: 360-905-2057

or access our project feedback form.

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