What is Sydney Harbour Bridge made of?

Materials used to construct the Sydney Harbor Bridge include: About 6,000,000 steel rivets, 2,800 tons of steelwork, including arch and mild steel approach spans, 122,000 cubic meters of rock was excavated for foundations. 95,000 cubic meters of concrete was used. 17,000 cubic meters of granite facing was used on the pylons and piers. 272,000 liters 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.