The useful idea
- Span an obstacle
A bridge is a structure designed to span an obstacle, such as a river or railway
- Support the deck
Most bridges consist of a flat deck, supported by beams, arches, or cables.
- Transfer the weight
transfer the weight of the bridge to the subsoil without settling.
Why this matters
Look for Bridge the next time you notice this pattern in everyday life.
Try this
Look for Bridge the next time you notice this pattern in everyday life.
Test your recall
Which idea belongs to the explanation of Bridge?
- Span an obstacle — correct
- Support the deck
- Transfer the weight
A bridge is a structure designed to span an obstacle, such as a river or railway