Across
- 2. the simplest type of bridge
- 5. provides passage over an obstacle
- 7. the strongest shape
- 9. Romans discovered and used to make bridges
- 10. box that holds back water
Down
- 1. cars drive on it
- 3. the distance between 2 bridge supports
- 4. the old London Bridge was what type of bridge
- 6. the color orange used for the Golden Gate bridge
- 8. connected triangles