SR 107 - Chehalis River Bridge - Structure Rehabilitation - Complete May 2021

Project news

Why is WSDOT rehabilitating the SR 107 Chehalis River Bridge?
The 1958 SR 107 Chehalis River Bridge located south of Montesano is in need of repairs. This project replaces the timber on the south approach to the bridge, installs modern safety rails, and paints the entire steel structure on the bridge to protect against corrosion. Rehabilitating a crossing is more cost effective than total bridge replacement. 

The End Result
A rehabilitated SR 107 Chehalis River Bridge will reduce maintenance costs to taxpayers and bring the south end of the bridge approach up to current standards. New paint will help preserve and protect the bridge against corrosion, extending it's useful life for years to come.

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.
     

Timeline

  • 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.
  • April 29: Temporary speed limit reduction signs installed.
  • Summer 2019: Construction begins.
  • Spring 2020: Construction continues on the east-half of the bridge to replace the timber pilings.
  • Winter 2020: Construction continues on the west-half of the bridge to replace the timber pilings.
  • Spring 2021: Final paving, guardrail installation and intersection improvements wrap up.
  • May 2021: Project complete.

Funding

This project was completed for $25.1 million (includes design and construction costs).

Contact

Project Engineering Office
Karen Boone
karen.boone@wsdot.wa.gov
360-538-8502

Media Relations
Tina Werner
christina.werner@wsdot.wa.gov
360-704-3270

SR 107 Chehalis River Bridge small map

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