1924. 1924
In 1932, when the Sydney Harbour Bridge was opened, it was the longest single span steel arch bridge in the world. The main span is 503 meters (1,650 feet) across it consumed more than 52,800 tonnes of silicon based steel trusses. The plates of steel are held together by around 6 million steel rivets. When the Sydney Harbour Bridge was opened by the Premier of New South Wales, Mr Jack Lang on the 19th March 1932, the Harbour Bridge was one of the greatest engineering masterpieces of its time. Building the bridge – “About that quote…”. 1  Construction on the Sydney Harbour Bridge started in 1924. 2  It took 1,500 men, eight years, 53,000 tonnes of steel and six million hand driven rivets to complete the world’s biggest Meccano Set. Building the bridge – “About that quote…”. 1  Construction on the Sydney Harbour Bridge started in 1924. 2  When finished in 1932 the final bill was £10 million – more than double the original quote. 3  The top of the arch rises and falls up to 18 centimetres when the temperature changes. The Sydney Harbour Bridge is one of Australia's most well known and photographed landmarks. It is the world's largest (but not the longest) steel arch bridge with the top of the bridge standing 134 metres above the harbour. Although the Tyne Bridge was opened in 1928 – four years before the Harbour Bridge was opened – the tender was submitted and contract signed for the Sydney Harbour Bridge in March 1924. Even though the Sydney Harbour Bridge was officially opened in 1932, it took many years to build. Construction of the Sydney Harbour Bridge started on the 28th July, 1923 and took 9 years to build finishing on the 19th January, 1932 before being officially opened on 19th March 1932. Where is the Sydney Harbour BridgeSo Where is the Sydney Harbour Bridge exactly? The Sydney Harbour Bridge is (believe it o... The Tyne Bridge in Newcastle-upon-Tyne, England is a much smaller version of the Sydney Harbour Bridge, its length measuring 397 metres and the main span 161 metres. Although the Tyne Bridge was opened in 1928 – four years before the Harbour Bridge was opened – the tender was submitted and contract signed for the Sydney Harbour Bridge in March 1924. The bridge's design was influenced by the Hell Gate Bridge in New York City. It is the sixth longest spanning-arch bridge in the world and the tallest steel arch bridge, measuring 134 m (440 ft) from top to water level. It was also the world's widest long-span bridge, at 48.8 m (160 ft) wide, until construction of the new Port Mann Bridge in Vancouver was completed in 2012. The Harbour Bridge is an integral part of the Sydney New Year's Eve celebrations, generally being used in spectacular ways during the fireworks displays at 9:00 P.M. and midnight. 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. Although the Tyne Bridge was opened in 1928 – four years before the Harbour Bridge was opened – the tender was submitted and contract signed for the Sydney Harbour Bridge in March 1924. 1 Construction on the Sydney Harbour Bridge started in 1924. 2  It took 1,500 men, eight years, 53,000 tonnes of steel and six million hand driven rivets to complete the world’s biggest Meccano Set. 3  When finished in 1932 the final bill was £10 million – more than double the original quote. Building the bridge – “About that quote…”. 1  Construction on the Sydney Harbour Bridge started in 1924. 2  When finished in 1932 the final bill was £10 million – more than double the original quote. 3  The top of the arch rises and falls up to 18 centimetres when the temperature changes.
http://www.harbourbridge.com.au/hbpages/historycontx.html http://blog.businesseventssydney.com.au/industry-insiders/12-quirky-and-amazing-facts-about-the-sydney-harbour-bridge/ http://www.australia.gov.au/about-australia/australian-story/sydney-harbour-bridge http://sydneyharbourbridge.aussieblogs.com.au/when-was-the-sydney-harbour-bridge-built/ http://www.australia.gov.au/about-australia/australian-story/sydney-harbour-bridge https://en.wikipedia.org/wiki/Sydney_Harbour_Bridge http://www.australia.gov.au/about-australia/australian-story/sydney-harbour-bridge http://blog.businesseventssydney.com.au/industry-insiders/12-quirky-and-amazing-facts-about-the-sydney-harbour-bridge/
when did the harbour bridge started being built