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        Building Big | Firth of Forth Cantilever Bridge

        Cantilever bridges like the Firth of Forth Railway Bridge may look complicated, but the principle on which they're built is very simple. In this video segment from Building Big: Bridges, series host and narrator David Macaulay describes the forces at work in a cantilever bridge and explains how the bridge's design uses some of these forces to create a very strong and stable span.

        This resource was adapted from Building Big: Bridges.

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