What is Sydney Harbour Bridge made of?

Materials used to construct the Sydney Harbour Bridge include: About 6,000,000 steel rivets 2,800 tonnes steelwork, including arch and mild steel approach spans 122,000 cubic metres of rock was excavated for foundations 95,000 cubic metres of concrete was used 17,000 cubic metres of granite facing was used on the pylons and piers 272,000 litres of paint were used for the initial 3 coats of paint The span of the bridge was constructed using steel (mostly imported from the UK) with the pylons being constructed from granite and concrete. The deck is asphalt and concrete, and there are two railway lines across on concrete sleepers.

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