Basically it's simple in its conception. There are four main cables that go over two towers. The towers are about 600 feet in height.

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Each cable is about 3-feet in diameter, and within the cables are thin strings of wire that actually make up the cable themselves.

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When the bridge first opened, October 25, 1931, that first year, 5.5 million vehicles used the bridge. Last year 110 million vehicles used the bridge.

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