What Makes Bridges So Strong? - YouTube
The most common types of modern bridges include: beam, truss, arch, cantilever, cable-stay and suspension. A beam bridge, the simplest type of bridge, is made of long beams of wood, metal or concrete that are supported at each end by piers.
Use the pieces provided to create a safe path for the train to travel across to the tunnel.
What is the shape of the bridge?
Basic Parabola - YouTube
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