STEM Builder
Engineering

Structures

Design it, price it, test it to failure. Pick a challenge below.

Bridge Builder

Design a truss bridge across a canyon, then send a truck across it and watch the physics play out. Members stretch and compress, color-shift under stress, and fail if the design can't take it.

  • Pick a span from 20 to 100 ft and a truck load up to 30 tons
  • Six classic truss guides or go freestyle
  • Live stress colors, a deflecting deck, and a real collapse when it fails
  • Every design has a price — the cheapest bridge that holds wins
Open Bridge Builder
Bridge Builder stress test