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SR 107 - Chehalis River Bridge - Structure Rehabilitation

SR 107 Chehalis River Bridge small map
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 SR 107 Chehalis River Bridge trestle SR 107 Chehalis River Bridge Trestle

Timber approach to the SR 107 Chehalis River Bridge
Timber approach to the SR 107 Chehalis River Bridge.

Sept 13 Open House
Montesano Open House - Sept. 2016


October 2017

  • Construction is anticipated to begin during late 2018.  
  • The bridge during construction will remain open to local traffic. Local drivers will encounter one-way alternating traffic. Local drivers can also expect occasional night and full weekend closures.
  • All other traffic, including truck traffic, will detour around the bridge during construction.


Why is WSDOT rehabilitating the SR 107 Chehalis River Bridge?
The 58 year-old SR 107 Chehalis River Bridge located south of Montesano in Grays Harbor county is in need of repairs. This project will replace the timber on the south approach to the bridge, install modern safety rails, and paint the steel structure on the bridge.

The End Result
A rehabilitated SR 107 Chehalis River Bridge will reduce maintenance costs. New paint will help preserve and protect the bridge against corrosion.

Project Benefits

  • Reduce maintenance frequency and costs by replacing the deteriorated timber approach trestle with a concrete structure.
  • Reduces severity of collisions by installing modern traffic barriers and guardrail.
  • Preserves the steel trestle by painting.

What is the project timeline?

  • Fall 2016: Finalize structure rehabilitation plan.
  • Late 2018: Construction

Financial Information

Financial Data for PIN 310702B, 310705B
Funding Source Amount ($ in thousands)
2003 Gas Tax (Nickel Funding) $0
2005 Gas Tax (TPA) $0
Pre-Existing Funds (PEF) $0
CWA $15,909
Total $15,909

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

How can I get more information?
John Romero
WSDOT Project Engineer

Claudia Bingham Baker
WSDOT Communications

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