when did they start building the harbor bridge
The New South Wales Government then invited worldwide tenders for the construction of the Bridge in 1922 and the contract was let to English firm Dorman Long and Co of Middlesbrough. The Sydney Harbour Bridge construction started in 1924 and took 1,400 men eight years to build at a cost of 4.2 million. Six million hand driven rivets and 53,000 tonnes of steel were used in its construction.