What are facts about 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 3.5 kilograms 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 and 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