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SR 6 - Willapa River Bridge - Bridge Replacement

Status: Construction
Project Area View entire map

The old and new SR 6 Willapa River bridges
WSDOT is replacing the 85-year-old Willapa River Bridge with a wider, more modern structure. More photos


Jan. 2015

  • All lanes of the new bridge opened to traffic July 3, 2014.
  • The speed limit has returned to 55 mph.
  • Crews have removed the old bridge, piece by piece.

This project replaces the existing SR 6 Willapa River Bridge with a new, wider structure with 12-foot lanes and 6-foot shoulders.

The new bridge will help improve safety and increase mobility on SR 6, a critical east-west route between Interstate 5 and the Southwest Washington coast.

Why is WSDOT replacing this bridge?
The existing bridge was built in 1929. At 22 feet wide, it is too narrow to accommodate the types and number of vehicles that cross it today.

The bridge also does not meet current federal seismic, flood, or structural standards.

The End Result
A wider, safer bridge that accommodates today’s traffic and meets current federal seismic, flood and structural standards.

Project Benefits

  • Safety: Constructs a wider roadway, and installs concrete barriers and new bridge railings. Helps bridge better withstand earthquakes and flooding.
  • Mobility: The wider structure allows traffic to flow smoothly across the bridge without delay.

What is the project timeline?

  • Spring 2013: Project advertised to contractors
  • June 10, 2013: Construction began
  • Fall 2014: Construction is complete, and traffic is moving on the new bridge.
  • Winter 2015: Vegetation plantings will complete the project

Financial Information

Financial Data for PIN 400694A
Funding Source Amount ($ in thousands)
2003 Gas Tax (Nickel Funding) $0
2005 Gas Tax (TPA) $5,982
Pre-Existing Funds (PEF) $1,117
Total $7,099

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

How can I get more information?

Area Engineer Colin Newell
WSDOT Chehalis Project Office
1411 Rush Road
Chehalis, WA 98532
Phone: 360-740-8600, or toll-free 1-866-713-2412


Bart Treece
WSDOT Communications 
11018 NE 51st Circle
Vancouver, WA 98682
Phone: 360-905-2058

Or access our project feedback form.

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