SR 107 - Chehalis River Bridge - Structure Rehabilitation

Project news

  • Construction is anticipated to begin summer 2019
  • During construction, the bridge will remain open to local traffic who will encounter one-way alternating traffic as well as 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.

Needs & 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.


  • Fall 2016: Finalize structure rehabilitation plan
  • September 13, 2016 Open House: Display Boards (pdf 1 MB) Invitation (pdf 238 kb)
  • Spring 2019: Advertise construction contract for competitive bidding
  • Feb. 1, 2019: Contract awarded to Rognlin's, Inc.
  • Summer 2019: Construction begins
  • Winter 2020: Project complete


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 $21,414
Total $21,414


John Romero
WSDOT Project Engineer

Tina Werner
WSDOT Communications