SR 506 - Lacamas Creek Bridge Replacement

Project news

Updated Sept. 2020

  • On Tuesday, Sept. 22, 2020 - the bridge reopened to traffic. 
  • To see what the bridge looked like before construction and what the newly constructed bridge looks like, check out the video
  • Crews have some additional minor work to finish before the project is complete.  

Beginning Tuesday, June 18, 2019, Washington State Department of Transportation’s contractor, Farline Bridge, Inc., will start work to replace the existing, aging State Route 506 - Lacamas Creek Bridge near Vader, in Lewis County. To replace the bridge, contractor crews will close both directions of SR 506, between Telegraph Road and the end of the Lacamas Creek Bridge (mileposts 8.0 - 8.19). During the closure, travelers between Vader and I-5 will follow a signed detour, using South Military Road and SR 505. The bridge closure will remain in place until construction of the new bridge is complete.

Needs & benefits

Originally built in 1951, the Lacamas Creek Bridge in an important connection along SR 506, between Vader and I-5.

The existing bridge no longer meets modern bridge standards and also needed repairs. This project will restore the structural integrity of the bridge with a new concrete structure that meets current standards and can accommodate all legal loads. 

The new concrete bridge will benefit all travelers by improving safety with a wider structure that includes better pedestrian and bicycle access.

  • Safety - The new concrete bridge will replace the existing structure, and will meet current bridge safety and functionality standards.
  • Mobility - The Lacamas Creek Bridge will be widened with improved bike and pedestrian access, ensuring people of all abilities are connected. 

What can travelers expect

During construction, travelers will follow a signed detour route, around the bridge closure using South Military Road and SR 505. Once the bridge is reopened to traffic, crews have some additional weather-dependent work to finish before the project is complete.

The roadway and bridge will open to travelers on Tuesday, Sept. 22, unless it is postponed due to rain or smoke. 


  • Spring 2019: Project went to competitive bid
  • Summer 2019: Construction began
  • Late summer 2020: The new bridge is scheduled to open to traffic
  • Fall 2020: Construction scheduled for completion 


Financial Data for PIN 450607A
Funding Source Amount ($ in thousands)
2003 Gas Tax (Nickel Funding) $0
2005 Gas Tax (TPA) $0
Pre-Existing Funds (PEF) $6,226
CWA $0
Total $6,226


Colin Newell
WSDOT Project Engineer

Celeste Dimichina
WSDOT Communications

SR 506 - Lacamas Creek Bridge Replacement project detour map

Aerial view of SR 506 Lacamas Creek Bridge

The existing SR 506 Lacamas Creek Bridge is made of timber and was originally built in 1951. The new bridge will be a wider structure made of concrete.