Dorman Long's Sydney Harbour Bridge, built in 1932, is the most renowned bridge ever built on Teesside. This was partially inspired by the 1929 Tyne Bridge, which is considered as a symbol of Tyneside's Geordie pride, but it was also a result of Dorman Long's Teesside craftsmanship. The bridge was designed by Sir Edwin Lutyens and Sir Herbert Baker. It links Redcar with Southwater over the River Tees near Middlesbrough.
In addition to its iconic status, the bridge has been listed at number 7 on BBC's list of the 100 greatest buildings and monuments in Britain. It is regarded as one of the finest pieces of modern architecture in Europe.
The bridge is made up of two parallel cast-iron girders, each nearly half a mile long, supported by concrete pylons inserted into the riverbed. There are actually nine pairs of piers, with an additional three at each end. The central section, which is by far the largest, is 175 feet wide and consists of eight lanes for vehicles. The other side is much narrower - only three traffic lanes - but this doesn't affect the driving experience thanks to automatic motorway barriers on both sides of the road.
The total cost of the project was £1.5 million ($A2.4 million today), which at the time was quite a lot of money for its time.
1934 The Tees Newport Bridge has become a landmark in Middlesbrough. The Newport Bridge, built by local steel titans Dorman and Long, who also built the Sydney Harbour Bridge and a slew of others throughout the world, opened in 1934. It crosses the River Tees just south of its confluence with the River Idle.
Newport Bridge is an arch bridge that carries road traffic over the River Tees near Newport, North Yorkshire. It connects Middlesbrough with South Bank.
The bridge is formed from two parallel cast-iron decks supported by circular brick piers. The central span measures 150 feet (46 m), while the approach spans are 95 feet (29 m) each. A footpath runs along one side of the bridge, while the other is for vehicles. There are entrances on both sides leading to a passenger ferry service across the river to Ryton-on-Tyne and Washington.
Newport Bridge was designed by architects Henry Dorman and Edward Long and constructed by the Naylor, Butler & Tanner company. It replaced a swing bridge that had been located further upstream. The new bridge was needed because traffic was growing rapidly around Middlesbrough as it became a major industrial centre. At the time of its construction, it was Britain's widest single-span bridge.
The bridge was given Grade II listed status in 1992.
The bridge between Middlesbrough and Stockton was built in 1934. The Sydney Harbour Bridge in Australia is one of the most renowned in the world. "In Australia, youngsters are still taught the name Dorman Long," Mr. Dyer remarked. He also noted that the company has a museum in its headquarters city of Linwood, New Jersey, USA.
Longitudinal members form the main part of a bridge, so they need to be strong and rigid. In this case, the Dorman Long Bridge uses three longitudinal members made of steel: two I-beams and a tube. The deep U-shaped section of each I-beam provides support for the road surface above. The vertical distance between these sections is called the depth of the beam. The horizontal distance between each end of an I-beam is called its width. In this case, the Dorman Long Bridge has wide I-beams with a depth of 20 feet (6 m).
The tube is only used as a reinforcing element. It provides extra strength to the middle of the bridge when more load is placed on it than the lower portion or the upper portion. The tube is tied together at both ends with I-beams.
The total length of the Dorman Long Bridge is about 705 feet (213 m). It crosses over the Tees River near its junction with the Anfield River.
Newcastle Bridge In truth, Sydney was the first to begin construction on its bridge, serving as a model for the Tyne Bridge. Mott, Hay, and Anderson designed the Tyne Bridge after seeing the Sydney Harbour Bridge. This, in turn, was inspired by the Hell Gate Bridge in New York. However, work on the Newcastle Bridge did not begin until after the death of John Mott in 1867. Thus, it is he who gets the credit for designing what is now known as the First Trans-Pennine Crossing.
Sydney's second bridge, the Anzac Bridge, opened in 1973. It crosses over the Yarra River at Melbourne, connecting the north and south sides of the city center.
Newcastle's third bridge, the Forth Road Bridge, opened in 1990. It crosses over the Firth of Forth at Stirlingholm near Edinburgh.
And last but not least, Newcastle's fourth bridge, the Millennium Bridge, opened in 2001. It crosses over the River Tyne just west of the city center.
The order in which these bridges were constructed isn't important. What is important is that all four of them are successful examples of suspension bridges technology!
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