Bridge builder
Follow the forces from the road to the ground.

Before you jump in
A bridge can look like a straight line, a curve, or a web of cables, yet each design has to solve a related problem: carrying a load across a gap. The visible shape is a clue to how that load travels. This quiz invites you to follow it, beginning with familiar components and then tracing the pushes and pulls that make very different structures possible.
You will compare beams, arches, trusses, and suspended roadways without calculating a single engineering equation. Later questions focus on why a design must fit its site and why an attractive model is not enough to establish what a full-sized bridge can carry. Imagine the route a load takes through connected parts. That habit is more useful here than knowing the name of the longest bridge or recognizing a famous skyline from a photograph.
What you’ll explore
- Tension and compression
- Beam, arch, truss, and cable designs
- Loads, sites, and evidence
Trace basic bridge load paths and explain why design choices depend on the crossing.
Which word describes a force that tends to pull a member apart?
This is the opening question. Start the round to see the choices and test your answer.


