SR 530 Slide Memorial

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SR 530 Slide Memorial

Snohomish County Parks and Recreation is working with families of victims, survivors and responders of the March 22, 2014, SR 530 Slide to build a permanent memorial at the site of the tragic event to honor those who were lost, those who survived, the responders and the resilience of the surrounding communities. In support of the families and survivors, a website has been dedicated to the project. Visit for additional updates and an opportunity to donate to the ongoing care of the memorial.


Updated 12/10/21

  • Memorial Spruce Removal and Storage - Completed in 2017
  • Posts were installed for a low barrier along the Whitehorse Regional Trail to discourage trail users and memorial visitors from accessing the mudslide debris area.
  • Gateways at the two ends of the Slide Memorial were raised by the Timber Framers Guild in October 2020 and Parks staff installed the roofing and assisted a team of volunteers in installation of gabion walls under the structures.
  • The memorial flagpole has been re-raised with a new base structure and treatment of the pole, and a solar lighting system to provide long-term lighting of the flag has been installed in 2021.
  • Staff is coordinating with our non-profit partner, Hope Unlimited to complete transfer of WSDOT trees fall/winter 2021.
  • Park staff continue to coordinate with family representatives on fundraising efforts, website updates, design coordination and volunteer events.


We’d like to thank the volunteers and donors who have been involved and are making this work possible: 

  • Evolution Tree Service 
  • Ness Campbell Crane and Cory DeYoung 
  • Doug Wesson Contract Cutting 
  • Oso Fire Hall 
  • Arlington Drilling 
  • Wild Edge Woods and 
  • Outback Power
  • Perteet, Inc.
  • Reid Middleton
  • Minaker Architecture
  • Northwest Hydraulic Consultants
  • Bruce Dees & Associates


To develop the conceptual design for the memorial, Parks worked with the interpretive team at MIG/Portico to organize feedback from families, survivors and responders into a cohesive design proposal. The design is based on the idea that visitors to an educationally and emotionally intense place will move through stages of Arrival, Decompression, Reception, Orientation, Interpretation and Transition/Transformation (ANDROIT).

 After seeking feedback from families, responders, community members and the Oso Slide Memorial Committee, Parks has further developed the conceptual design into site, grading, drainage and planting plans and has submitted for construction permits. 

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Parks staff estimates the total cost of the SR 530 Slide Memorial to be about $5 million and has received donations to complete the design. Funding to complete the construction of the memorial and installation of its components has been allocated in the 2022 Snohomish County budget.


Grant funding from Washington State Commerce, in the amount of $294,00 has been awarded to the project. Grant applications to Washington State Recreation and Conservation Office were awarded in the amount of $500,000.

Donations for materials, services or funds can be accepted through the Snohomish County Parks Donation Fund. All proceeds collected for the SR 530 Slide Memorial will be completely dedicated to the project. Please contact the project manager below for additional information about donations, or visit the project website.


Sharon Swan, Principal Planner
6705 Puget Park Drive
Snohomish, WA 98296
Email Sharon Swan
(425) 388-6616