Across
- 2. – The shape that helps an arch bridge stay strong.
- 6. – The strongest type of bridge that can span very long distances.
- 7. – The simplest type of bridge made of a flat beam.
Down
- 1. – The twisting force that can act on a bridge in strong winds.
- 3. – The pulling force that stretches materials.
- 4. – The pushing force that squeezes materials.
- 5. – A bridge made with triangles to spread weight evenly.