Did you know?

• The Sydney Harbour Bridge is listed in the Guinness Book of Records as the world's widest long-span bridge.
• When opened in 1932, 11,000 vehicles crossed the bridge each day. Today that's grown to more than 160,000 each day.
• Around 4000 broken-down vehicles are removed from the bridge each year.
• More than 100 people work on maintaining the bridge each day.
• It took almost nine years to build at a cost of close to £10,000,000 ($300,000,000 in today's money).
• The arch can rise or fall as much as 18 centimetres due to heating and cooling.
• The flags on top of the bridge are replaced every four to six months.
• Total weight of the steelwork: 52,800 tonnes including arch and steel approach spans.
• Total length of bridge: 1149 metres including approach spans.

January 2012 work

• There will be at least 40 trucks moving onto the bridge from 10pm on each Friday to start the work.
• Some 250 staff will work on the bridge.
• Each weekend about 1300 tonnes of asphalt will be replaced on the bridge deck.
• Once it's all down, the epoxy waterproofing will weigh roughly 38,700 kg.
• After it is laid, the final waterproofing will take about 4 hours to dry.