The bridge opened in 1932 and serves as the primary transportation link between Sydney's Central Business District (CBD) and its suburbs on the northern side of the harbour.
It took 8 years to build and spans 500 metres (1,650 feet), making it one of the longest steel-arch bridges in the world.
It is over 18 metres (60 feet) wide - enough to carry eight lanes of automobile traffic, two sets of train tracks, a bicycle path, and 2 pedestrian walkways.
We chose to climb it.
