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The Bridges of Dorman Long, Middlesbrough
The Bridges of Cleveland Bridge and Engineering Darlington
New Lambeth Bridge. London England.
Road Bridge
Builders :- Dorman Long, Middlesbrough.
Total Length 776 feet (236m) - 5 spans
4,620 tons
Tyne Bridge. Newcastle. England.
Road Bridge
Builders :- Dorman Long, Middlesbrough.
Total length 1,254 feet (382m)
Weight approx 8,000 tons
Bangkok Memorial Bridge , BAngkok. Thailand.
Road Bridge
Builders Dorman Long, Middlesbrough
Total length 755 feet (230m)
Weight 1,100 tons
Memorial Bridge. The 2nd bridge across the river built in 1932 to celebrate Bangkok's 150th year anniversary.
Menai Suspension Bridge, Menai Strait. Wales
Road Bridge
Builders - Dorman Long, Middlesbrough.
Total length 1,265 feet (386m)
Weight 3,200 tons
Further Info
In the years 1810-11, several plans were laid by Mr Thomas Telford before the house of commons, to build a bridge accross the Menai Straits. For some time, many lives had been lost in the treacherous waters and the number was becomming too serious to be overlooked. The subject frequently occupied the attention of parliament, but nothing effectual was done until 1818, when Mr Telford laid before a Committee of the House of Commons a new design of an iron suspension bridge. The first stone of this national bridge was laid at noon on Tuesday 10th August, 1820 by Mr Provis, resident engineer. The general opening of the bridge took place on Monday January 30th, 1826. The Royal London and Holyhead mail coach, carrying the London mail-bag for Dublin, passed over at 1 a.m. It is said that the only fatal accidents that occured during the erection of the bridge were of four workmen - an Englishman, and Irishman, a Scotsman and a Welshman .
The bridge was later strengthened between 1938 and 1941 to accomodate the increase of traffic on the A5 . The bridge was the first of its kind to handle heavy traffic.
Strostrom Bridge, Denmark.
Thanks to Copenhagen Library for sending this picture in
Railway Bridge
Builders - Dorman Long, Middlesbrough.
Total length 10,535 feet (3211m)
Weight 21,000 tons
Chien Tang River Bridge, China .
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Railway and Road Bridge
Builders - Dorman Long, Middlesbrough.
Total length 3,840 feet (1170m)
Weight 4,135 tons
Otto Biet Bridge over the Zambesi River , Zambesi .
Thanks to Hamilton Hall for this picture. Hamilton's Gandmother's sister
was married to the great Otto Biet whom this bridge was named after
Type Road Bridge - Suspension
Builders - Dorman Long, Middlesbrough.
Total length 1,210 feet (369m)
Weight 1,242 tons
Khedive Ismail Bridge, Cairo. Egypt.
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Type unknown
Builders - Dorman Long, Middlesbrough.
Total length 1,250 feet (381m)
Weight 3,000 tons
Dessouk Bridge, Lower Nile, Egypt.
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Type unknown
Builders - Dorman Long, Middlesbrough.
Total length 2,010 feet (613m) 10 spans including 194 feet swing span
Weight 3,800 tons
Limpopo Bridge, South Africa
Type unknown
Builders - Dorman Long, Middlesbrough.
Total length 1,515 feet (462m)
Weight 1,876 tons
Credit: Ulla Hauer/ACT International, March 2000
Only part of the Limpopo Bridge is still above water.
Omdurman Bridge, White Nile, Sudan.
Type unknown
Builders - Dorman Long, Middlesbrough.
Total length 2,012 feet (613m) 7 fixed spans, one swing span
Weight 3,700 tons
Sydney Harbour Bridge, Sydney. Australia.
Type Road
Builders - Dorman Long, Middlesbrough.
Total length 3,770feet (1149m)
Weight 51,000 tons Arch weight 38,000 tons
The Sydney Harbour Bridge is one of Sydney's most famous landmarks. Completed in 1932, the construction of the bridge was an economic feat as well as an engineering triumph. Prior to the bridge being built, the only links between the city centre in the south and the residential north were by ferry or by a 20 kilometre (12½ mile) road route that involved five bridge crossings.
The Sydney Harbour Bridge, which is known locally as the "Coat Hanger", took eight years to build, including the railroad line. The bridge was manufactured in sections on a site that is now occupied by Luna Park funfair.
Construction on the bridge began in December, 1926. The foundations, which are 12 metres (39 feet) deep, are set in sandstone. Anchoring tunnels are 36 metres (118 feet) long and dug into rock at each end. Construction on the arch began in November, 1929. It was built in halves with steel cable restraints initially supporting each side. The arch spans 503 metres (1650 feet) and supports the weight of the bridge deck, with hinges at either end bearing the bridge's full weight and spreading the load to the foundations. The hinges allow the structure to move as the steel expands and contracts in response to wind and changes in temperatures.
By October, 1930, the two arch halves had met and work then began on the deck. The deck is 59 metres (194 feet) above sea level and was built from the center out.
The Harbour Bridge was officially opened on 19 March 1932. The total cost of the Bridge was approximately 6.25 million Australian pounds ($A13.5 million), and was eventually paid off in 1988. The initial toll for a car was 6 pence (5 cents) and a horse and rider was 3 pence (2 cents). Today the toll costs $2.00. The toll is now used for bridge maintenance and to pay for the Sydney Harbour Tunnel. The annual maintenance costs are approximately $5 million. More than 150,000 vehicles cross the bridge each day.
The bridge was built by 1400 workers, 16 of whom were killed in accidents during construction. Painting the bridge has become an endless task. Approximately 80,000 liters (21,000 gallons) of paint are required for each coat, enough to cover an area equivalent to 60 soccer fields. Before Paul Hogan (from the movie Crocodile Dundee) became famous, he worked on the Sydney Harbour Bridge as a painter.
Recommended for all visitors to Sydney is the Pylon Lookout. Inside the Lookout is a fascinating display on how this bridge was built. Entry to the Pylon is from the pedestrian walkway on the Harbour Bridge. You can get to the walkway via the stairs in Cumberland Street, The Rocks, or from near Milsons Point Station on the north side. The Pylon Lookout is open every day except Christmas Day.
Newport Bridge, Middlesbrough, England
Type Road
Builders - Dorman Long, Middlesbrough.
Total length 4,920 feet (1499m)
Weight 8,000 tons
Birchenough Bridge, Zimbabwe
Type - Road Bridge
Builders - Dorman Long, Middlesbrough.
Total length 378 Metres
Weight 1,242 tons
Location Near Chipinge, Save River. esigners Ralph Freeman (Struct. Eng. for Sydney. Harbour Bdg.) Date Completed 1935 Original Client Beit Trust, (chaired by Sir Henry Birchenough) Style Single arch suspension bridge
Above the braided Save River, Birchenough Bridge rises mirage like from the ruddy cactus, thorn and baobab scrub. A single arch structure it was built in the early 1930's and ranked as the worlds third largest suspension bridge.
Apart from its smaller size the 378m long bridge is an exact replica of Australia's famed 'Coat Hanger' - Sydney Harbour Bridge. It was designed by Ralph freeman, who was also the structural engineer for the Coat hanger. This strategic structure also appears on Zimbabwe's 20 cent coin.
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The Bridges of Cleveland Bridge and Engineering Darlington