Steel and cables. The bridge nickname is Galloping Gertie when it buckled and fell in high winds. I have driven across the bridge and it has girders and seems pretty solid.
The material used to build the bridge was wood and steel
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Reinforced concrete
Stone and steel.
cheese plastacine and gelatine
The present London Bridge is a pre-stressed concrete box girder bridge.
Bricks concrete and steel.
The present London Bridge is a pre-stressed concrete box girder bridge.
plastic and metal C:
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it was made of simple macines and pullies
The materials that are used to build a cantilever bridge are typically structural steel, iron, and also prestressed and reinforced concrete. The materials listed create the multiple parts of the bridge. These include the trusses, vertical columns, box girders, and most importantly, the cantilever itself.