Bridge Bonanza

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Across
  1. 2. The weight a bridge carries
  2. 5. the distance a bridge has to cross
  3. 6. the surface of the bridge (road/path/rail)
  4. 7. third stem in the Engineering design process
  5. 10. a three sided shape
  6. 12. one way engineers prevent bridge failure after they are built (you probably did it to your model before testing)
  7. 13. The twisting force applied to bridges, usually by wind
Down
  1. 1. name of the bridge that recently collapsed from strong winds
  2. 3. a pushing or squeezing force, acting inward
  3. 4. a written plan that identifies a problem to be solved, its criteria, and its constraints
  4. 8. the best option for long spans
  5. 9. a pulling or stretching force, acting outward
  6. 10. a system of diagonal triangular supports
  7. 11. the simplest type of bridge