Harbour Bridge in Sydney (Australia) - steel through arch bridge
Location show on map
Date of build
1923 - start of construction
March 19, 1932 - official opening
The bridge has lost the status of a visual city symbol in favor of the Opera House . The bridge over the port, which was previously only a ferry, was demanded almost from the very beginning of Sydney. There were also those who opted for the construction of the tunnel. Finally, the Australian rail engineer John J. Brad Bradfield was approved. The road running along the bridge, on which trains also run, was named Bradfield in his honor.
The convexity of the arc runs 134 meters above the waters of the busy port
A functional gray bow made of steel, covered with 272,000 liters of gray paint, the cheapest one you could get at that time. The area that you had to paint is comparable to the surface of 60 sports fields.
The bridge is 49 meters wide, it is the widest bridge in the world in its category. There are eight lanes, a pedestrian crossing, a bike lane and double railways. There is also the possibility of climbing 200 feet up and crossing the arch, which is legal since 2001.
The two halves of the arch were systematically built on both sides of the bank. Each cable is supported from the rear by 128. Steel parts were produced in factories, transported under the bridge with barges and lifted from there by two 580-ton electrically controlled cranes.
The construction of the bridge weighs 52 800 tons, including 39,000 tons per arc only.
During the construction of the bridge: 122,000 m² rocks, 95,000 m² concrete, 17,000 m² granite.
Foundations for four 89-meter high pylons that carry the entire bridge structure have been dug 12.2 meters into the ground and filled with concrete and special reinforced granite.