Bridges

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Across
  1. 2. cables are attached
  2. 7. curved structure
  3. 8. structure underneath superstructure
  4. 9. triangles
  5. 11. a weight that balances another
  6. 13. stretching force that pulls on a material
  7. 14. projects beyond a supporting column or wall and is counterbalanced and/or supported at only one end
  8. 15. horizontal space b/w two supports of a structure
  9. 18. Deck suspended from cables anchored at extremities
  10. 19. break down of rocks, concrete, etc
  11. 21. a tall pier or frame supporting the cable of a suspension bridge
Down
  1. 1. part of a suspension or cable bridge extending from an anchorage over the tops of the towers and down to the opposite anchorage
  2. 3. Bridge timber-truss bridge with a roof and siding
  3. 4. components that actually span the obstacle the bridge is intended to cross
  4. 5. lowest layer of a structure
  5. 6. hang from main cable to support the deck
  6. 10. retaining wall supporting the ends of a bridge
  7. 11. Bridge a variation of suspension bridge; tension extend from one or more towers
  8. 12. timber or other truss member that is subjected to squeezing or pushing
  9. 16. various forms of iron
  10. 17. a regular vibration of an object as it responds in step
  11. 20. Structure the roadway portion of a bridge