Bridge Crossword

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Across
  1. 3. The horizontal distance between two supports
  2. 5. A structural element supported only at one end while the other end goes freely into space
  3. 6. Designed many bridges that are known for their architectural beauty
  4. 7. St. John's is the only __ bridge in the Willamette Valley
Down
  1. 1. Another name for "Drawbridge" that operates using a heavy counter weight
  2. 2. This type of bridge uses a curved structure to transfer weight outward
  3. 4. A bridge that uses a connected network of triangles to bear load