Landslide Technology
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Washington Park Light Rail Station

Portland, Oregon
The Washington Park Station of the Westside Light Rail Project was constructed on a deep-seated ancient landslide. Initial excavation for the station headhouse reactivated a portion of the ancient landslide. Excavation was temporarily halted after Landslide Technology determined that a local slope failure would likely occur during continued excavation. 

In association with Parsons Brinckerhoff, Landslide Technology performed an investigation of the reactivated ancient landslide and developed a practical solution to provide resistance against sliding at a very low cost. Piles that were initially designed as the foundation support for the station headhouse were modified to resist the lateral forces of the deep landslide. A line of piles on the uphill side of the excavation was redesigned as heavily reinforced concrete shear piles. 

A landslide monitoring system was designed, installed and implemented by Landslide Technology to closely monitor the reactivated ground movement and to allow construction to continue. In addition, Landslide Technology developed a long-term landslide monitoring plan using an automatic data acquisition system of in-place inclinometers, multiple-level piezometers and a rain gauge. The automated system allowed a critical “threshold movement rate” to be established in the event of reactivated ground movements.

This landslide remediation won the Project of the Year Award in ACEC Oregon Engineering Excellence competition.
Washington Park Light Rail Station Construction
Washington Park Light Rail Station Construction

Services Provided:

  • Geologic reconnaissance of landslide areas
  • Landslide instrumentation
  • Slope stability analyses
  • ​Evaluation of appropriate remedial options
  • Final design of selected remedial measures
  • Shear pile design
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  • Home
  • Specialty Services
    • Geotech. Asset Mgmt. >
      • Montana Rock Slope Asset Mgmt. Program (RAMP)
      • Alaska Geotech Asset Mgmt
      • Ohio Landslide Inventory
    • Rope Access
    • 3D Modeling
    • Dam Safety & Slope Stability
    • Const. Sequence Modeling
    • Geotechnical Instrumentation
    • Construction Engineering
    • Expert Witness
  • Landslides
    • Hydropower >
      • Bull Run Flume
      • Swift Powerhouse
      • Frog Lake Dam Slide
    • Transportation >
      • Hwy 101 Johnson Creek
      • Looking Glass Hill Slides
      • SR 87 Arizona Slide
      • Togwotee Pass Road
      • Scoby Hill Landslide
      • Wrangell Airport
      • Snowbasin Access Road
      • Beartooth Debris Flows
      • Three Capes Scenic Loop Landslide
      • Richardson Hwy Slide
      • Bonners Ferry Landslide
      • Light Rail Station
      • Skagway Submarine Slide
    • Natural Resources >
      • West Africa Gas Pipeline
      • Greens Creek Mine Road
    • Private Clients >
      • Wasco County Landfill Landslide
  • Rock Slopes
    • Hydropower >
      • Biscuit Rock Rockslide
      • Skagit River Rockfall
      • JC Boyle Canal Rockfall
      • Prospect Dam Rockfall
      • Iron Gate Dam Rockfall
      • Cougar Dam Rockfall
    • Transportation >
      • I-15 (D3) Rock Slope Mitigation
      • Ketchikan Third Avenue
      • US Hwy 2 Libby Rockfall
      • Banks - Lowman Hwy
      • SR 191 Rock Cut Design
      • Going-to-the-Sun Road
      • SR 12 Rockfall Mitigation
      • Lakeside Rockfall
      • US 2 Badrock Canyon
      • South Tongass Highway
      • Weeksville Rock Bolting
      • US 26 Cove Palisades
  • Key Staff
    • Mike Meyer
    • Gerry Heslin
    • George Machan
    • Charlie Hammond
    • Brent Black
    • Darren Beckstrand
    • Chris Carpenter
    • Ben George
    • Wade Osborne
    • Tom Westover
    • Aine Mines
    • Adam Koslofsky
    • Logan Allender
    • Andy Kost
    • Collin McCormick
    • Anna Casady
    • Noah Kimmes
    • David LaPorte
    • Justin McCarley
    • Aleyna Donaldson
    • Michael Bunn
    • Andy Vessely
    • Larry Pierson
    • Derek Cornforth (Founder)
  • Resources
  • Contact Us