The Bridge For Kids
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The Bridge For Kids

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The town lies at the foot of the mighty and and volatile Mt. Rainier, one of the world's most potentially dangerous stratovolvanoes. Orting, WA is nestled in a fertile river drainage basin, which, ...

The town lies at the foot of the mighty and and volatile Mt. Rainier, one of the world's most potentially dangerous stratovolvanoes. Orting, WA is nestled in a fertile river drainage basin, which, while good for farming, also makes it a high risk area for a lahar, or volcanic mud flow. This power point highlights the purpose and current status of Orting, Washington's "Bridge for Kids."

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The Bridge For Kids The Bridge For Kids Presentation Transcript

  • Orting’s Bridge for Kids Jack Fitch, Dawa Sherpa, Jeff Baxter, Ryan McQueeny, Karin Erwin
  • Volcanic Hazards (Mt. Rainier)
    • Toxic Gases- wind will decide where it goes, quick dissipation
    • Landslides- could turn into a lahar and be dangerous
    • Lava Flows- high viscosity, lower risk to travel far and slow moving
    • Lateral Blasts- large blasts are rare
    • Tephra
      • building collapse
      • breathing issues
      • decrease visibility
      • Wind=unpredictable
    • Pyroclastic Flows!
    • Many Associated Hazards… a bridge doesn’t solve all problems
  •  
  • The Hazard: Lahars
    • In Hindi: wave
    • In English: Wet, Hot Concrete
    • Contents
      • Initially glacial and snow melt
      • Then, <20% water, mud, rocks, boulders, trees, cows, cars and other debris
      • Anything in the way!
  • The Hazard: Lahars
    • Lahars travel down through low spots…
    • Speeds up to 40m/s (90mi/hr) depending on conditions
  • Great Lahars in History
    • Nevado del Ruiz, Colombia
      • 1985: 23,000 buried and killed under the lahar
    • Mt. Pinatubo, Philippines
      • 1991: 1500 killed by soupy ash water from typhoon after eruption
  • Lahar History in the Pacific Northwest
    • The Source: Mt. Rainier’s Volcanic Activity
    • Two Big Ones
      • Osceola (5000ya)
      • Electron (500ya)
  • Orting History
    • Settled in 1854
    • High carbon lahar path +
    • drainage basin = Fertility
      • Hops, produce, farming,
      • Christmas tree farms
    • Supplier for coal towns of Carbinado and Wilkeson
    • Population 6,075
    • 2008 Census:
      • 44% of households have children
    • At the foot of Mt. Rainier…
  • Orting in Real Life
  • Orting, Washington
  • Orting, Washington
    • Lahars travel down and through low spots…
      • River valleys or past lahar paths
    Low Spot!
  • Why Orting?
    • Orting lies in a high risked lahar flow zone
    • How to alert the town in case of the actual event?
    • How to evacuate the people of Orting to safety in the short span of time?
  • What can be done?
    • The City of Orting installed sensors called Acoustic Flow Monitors.
    • Designated evacuation route consisting both walking and driving to higher grounds following the beginning of the two sirens.
  • Problem(s) in the Orting School District
    • Unsafe Escape Route for >2050 Students
      • Orting Primary, Middle and High Schools
      • Ptarmigan Ridge Intermediate School
    • Dangerous Crossing
      • SR162
    • Crazy/Erratic Drivers!
  • PTA finds an Alternative
    • Build a bridge across the Carbon River for faster and safer evacuation
  • The 2003 Feasibility Study
    • KPFF Consulting Engineers
    • Several Considerations
  • Bridge for Kids
    • The project has passed through its initial phase.
    • Currently working on engineering and designing aspect.
    • Two options for the bridge.
    • - Ramp or Stairs?
  • Bridge for Kids
    • Initially estimated total cost of the project $12.7 million
    • Currently received only $2.8 million from the state and federal funding
  • Looming Issues
    • Practicality
      • School in session only 12% of time
    • Accessibility Bridge must meet ADA standards to receive federal funding
      • Stairs cheaper but do not meet ADA
      • Aesthetically Displeasing
    • Timeliness
      • Parents are worried. When will it be done?
    • Funding
      • Flimsy Funding Agencies back out?
      • Post-construction maintenance?
  • Current Group Direction
    • Division of Topics
      • Karin
        • Lahars: all about them
      • Dawa
        • History of Lahars in the NW
      • Ryan
        • The Bridge for Kids: What is it?
      • Jeff
        • The Future of the Bridge for Kids
      • Jack
        • Potential Problems Issues
  • Future Directions
    • B4K In Depth?
    • Interview Targets
      • Chris Fowler: President of Bridge for Kids
      • Rex Kurbs: Ptarmigan Ridge Intermediate Principal
      • Barbara Baumi: Treasurer for Bridge for Kids
      • Michael Mariano: Pierce County Project Manager
    • Photos
      • Schools
      • Proposed Bridge Site
      • SR162
    • Investigate SR162
    • Tunnel?
  • Sources
    • www .bridgeforkids.org
    • http:// volvanoes.usgs.gov
    • http://www.geotimes.org/apr04/feature_MountRainier.html
    • http://www.geo.mtu.edu/volcanoes/hazards/primer/lahar.html
    • http:// library.thinkquest.org/andes/colombia/ruiz.html
    • http://www.suite101.com/view_image.cfm/731368
    • Lecture Presentation Mike Valentine, Friday, 6/5/2009.
    • http://www.wsdot.wa.gov/projects/sr162/ortingbridgeforkids/