Below are some interesting facts on the Sydney Harbour Bridge.

Length of arch span 503 metres
Height of top of arch 134 metres above mean sea level
Height to top of aircraft beacon 141 metres above mean sea level
Width of deck 49 metres
Clearance for Shipping 49 metres
Height of Pylons 89 metres above mean sea level
Base of each abutment tower 68 metres across and 48 metres long (two pylons rest on each abutment tower)
Total length of bridge 1149 metres including approach spans
Bearing Pins Each of the four pins measures 4.2 metres long and 368 millimetres in diameter
Thrust on bearings Under maximum load approximately 20,000 tonnes on each bearing
Number of rivets Approximately 6,000,000
Largest rivet Weighed 3.5kilograms and was 395 millimetres long
Longest Hanger 58.8 metres
Shortest Hanger 7.3 metres
Total weight of steelwork 52,800 tonnes including arch and mild steel approach spans
Weight of arch 39,000 tonnes
Rock excavated for foundations 122,000 cubic metres
Concrete used for bridge 95,000 cubic metres
Granite facing used on pylons & piers 17,000 cubic metres
Allowance for deck expansion 420 millimetres
Allowance for arch expansion The arch may rise or fall 18 centimetres due to heating or cooling
Number of panels in arch 28, each 18.28 metres wide
Record tonnage erected 589 tonnes of steelwork was erected on the arch in one day on 26 November 1929
Paint required 272,000 litres of paint were required to give the Bridge its initial three coats.

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