US 101 - Elwha River Bridge - Bridge Replacement

Project news

  • From 9 a.m. to 3 p.m. Monday, April 30, travelers can expect one-way alternating traffic as crews condcut a scheduled bridge inspection.
  • After reviewing seven different design alternatives and discussing them with residents, businesses and local jurisdictions, we are moving forward with Alternative 7.
  • This project information can also be accessed by using the url www.elwhariverbridge.com.
  • The status of the existing bridge is available by calling WSDOT’s toll-free informational hotline: 1-888-633-4005 (this phone line does not accept messages).
  • Submit questions or comments regarding the US 101 Elwha River Bridge.

Why is WSDOT rebuilding the US 101 Elwha River Bridge?

Built in 1926, the 3-span, 388-foot concrete arch bridge has served the community for more than 90 years. Over the last several years, the Elwha River has dramatically changed its course and flow, leading to significant erosion around the bridge foundations.  As a result, WSDOT estimates the riverbed around the bridge’s piers has lowered 14 feet.

View historical photos (pdf 731 kb)

The lowered riverbed revealed the piers’ seals, prompting WSDOT to do borings to verify the depth of the foundations. The borings, done in October 2016, revealed the foundations are on gravel, not bedrock. This finding was in contrast to what the original 1926 engineering plans showed.  As a result, WSDOT immediately installed almost 5,000 tons of riprap (large boulders) around both piers to help prevent further erosion. Additional bridge monitoring using tilt meters, crack meters, water flow meters, surveys and visual observations are also underway.

The End Result

The new Elwha River Bridge will be 40 feet wide that accommodates two 12-foot lanes and two-8 foot shoulders (the current bridge is 28 feet wide). The wider bridge will create a more comfortable crossing for motorists and provide adequate shoulder room for bicyclists and pedestrians. Additionally, the new alignment with US 101/Olympic Hot Springs Road will have a more gentle curvature, with a higher design speed (40 mph) at the east end of the bridge.

Needs & Benefits

The US 101 Elwha River Bridge is vital to the well-being of the communities on the Olympic Peninsula. Replacing the bridge will ensure that the US 101 route continues to be a reliable transportation facility for decades to come.

Additional project benefits include:

  • transit stops on both the west and east ends of the bridge, locations of which were coordinated with Clallam Transit;
  • relocating the intersection further east to provide better sight lines and intersection geometrics;
  • installing illumination at the intersection (no illumination is there presently);
  • building turn pockets on US 101 to Olympic Hot Springs Road;
  • building a short acceleration lane on northbound US 101 from Olympic Hot Springs Road;
  • building a small parking lot (either gravel or paved) for recreational access on the east end of the new bridge with access from Olympic Hot Springs Road;
  • building a gravel trail from the parking lot toward the water.

Timeline

  • Complete NEPA process Dec. 2018
  • Spring 2019 advertise construction contract
  • Summer 2019 construction begins
  • Fall 2020 traffic shifts onto new bridge.

Funding

Financial Data for PIN 310135F
Funding Source Amount ($ in thousands)
2003 Gas Tax (Nickel Funding) $0
2005 Gas Tax (TPA) $0
Pre-Existing Funds (PEF) $29,281
CWA $252
Total $29,533

 
Contact

Claudia Bingham Baker
Communications Manager
WSDOT Olympic Region
360-357-2789

Toll Free Information Hotline
Information about bridge status is available by calling 1-888-633-4005. Please note this number does not accept messages.

Map of the current Elwha River Bridge