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, 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

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