when was the sydney harbour bridge built

The Sydney Harbour Bridge was constructed over a span of 8 years, beginning in 1923 and officially opening on March 19, 1932. This colossal steel arch bridge, affectionately nicknamed the 'Coathanger' due to its arch shape, was a marvel of engineering in its day and remains an iconic Australian landmark. The project employed thousands and was a major feat during the Great Depression, symbolizing progress and hope. For the exact historical nitty-gritty, you might want to check official archives or the NSW government sites.