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The Bridge Challenge
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Problem_ In one of the rowdiest town meetings ever, the residents of Craggy Rock spoke out against the new drawbridge. "It's ugly," one angry resident said, "and there's always traffic on the bridge. They open it for boats, but what about us? We have to get to work, too!"

The mayor is begging you to build a new bridge. The local steelworkers are on strike, so she advises you to build a bridge with as little steel as possible.

Which bridge will you choose?

Cable-stayed bridge  Cantilever bridge Combination: arch and beam
Cable-stayed bridge Cantilever bridge Combination: Arch and Beam

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