One of the most iconic structures in all of Australia is the Sydney Harbour Bridge, which connects the northern suburbs of Sydney with the city centre.
Check out these cool facts about this famous landmark:
The Coat Hanger
Due to arch design, the bridge is referred to by locals as ‘The Coat Hanger’.
Tallest Steel Arch Bridge
Standing 134 metres above the harbor, the Sydney Harbour Bridge is the world’s tallest steel arch bridge.
It Took a Lot of Man Power
Construction on the project began in 1924. For the next 8 years, 1,400 workers were used in the construction of the project. The bridge officially opened March 19, 1932.
The bridge in its entirety weighs about 53,000 tonnes, which isn’t surprising considering 6 million rivets, 53,000 tonnes of steel, and 95,000 cubic metres of concrete were used in its construction.
It Was Tested in Interesting Ways
In 1932, to test the load capacity of the bridge, 96 steam locomotives were placed on the bridge in various positions- it passed!
The Top Arch Moves
Due to changes in temperature, the top of the bridge’s arch moves by about 180mm in either direction. Special hinges allow this change with compromising the structural integrity of the bridge.
Use Has Increased
When it first opened, the average annual daily traffic that used the Sydney Harbour Bridge was 11,000. Today, approximately 180,000 vehicles cross the bridge every day.