Harbor Bridge in Sydney

Harbor Bridge Harbor Bridge in Sydney Harbour, called all the "hanger" is the most recognizable landmark in Australia. It was built during the Great Depression. This - one of the largest arch bridges in the world and the largest bridge in Sydney. He is one of the main attractions Sidneya.Postroen Bridge Harbor in 1932, it connects areas of Sydney Davis Point and Wilson Point, divided by the bay.

Harbour Bridge. Before the advent of the bridge communication across the bay of Port Jackson is always carried out by the ferry, or people were forced to use bypass routes, which took away a lot of time and effort, as were 20 miles and passed through a total of five bridges. In the mid-19th century., For 50 years, various engineers from different countries offered 24 projects of bridge structures, and even a tunnel. But none of them has been approved. Australian John Bradfield solved this problem. After all the surveys he made some preliminary recommendations. On this basis, in 1922, an International Competition with granite arch bridge abutments. It has been reviewed many applications, but the victory went to London engineer Ralph Freeman. They share with Bradfield in 1924 began construction of the arch bridge. Construction of the grand bridge in Australia went on for 8 years. It was truly a great event because it happened all in times of economic crisis, which lasted more than a year. But Australians have stood it, and in gratitude were the largest arch bridge in the world.
Arched central bay has a length of 503 meters, but not only the length of the arch plays a role in determining its largest bridge. Bridge Harbor Bridge height above sea level is 134 m, under the bridge can easily pass large ocean liners. The width of the bridge 49 m. It is located eight lanes of cars, two railway tracks and cycling path, and sidewalk for pedestrians. Perhaps the little bridges in the world is made up of a combination of motion. Construction of the bridge cost Australia $ 20 million, and its maintenance costs are now $ 5 million. Now those who move across the bridge, pay about $ 2, although previously paid a total of 6 pence. Surprisingly, even at such a small collection of fees, the bridge still paid off by 1988
Construction of Steel Bridge Harbour Bridge (Auckland Harbour Bridge), across the Bay Waitemata (Waitemata Harbour), New Zealand, continued from 1954 to 1959. Harbour Bridge is an important part of the state highway number 1 and the Auckland Northern Motorway. Harbour Bridge, connects Saint Meris Bay, Auckland suburb of Northcote, a suburb of North Shore City. The bridge is the second longest bridge in New Zealand. The bridge is 1020 meters.

Harbour Bridge in Auckland, New Zealand

Earlier, before the bridge over the Waitemata Gulf, reported by ferry. Engineer Fred Bell (Fred Bell) in 1860, undertook the design of pontoon bridge across the Bay Waitemata, commissioned by North Shore farmers, but the bridge has not been implemented due to high project costs. Adjusted for inflation, in 2009, the cost of construction was 1.6 million New Zealand dollars.

Steel structures Harbour Bridge in Auckland, New Zealand

North Shore City in the early twentieth century was not a large agricultural settlement. After the Second World War, Oakland was engulfed in the construction boom, the city grew tremendous pace, and for expansion of the city, drew attention to the northern shore of the Gulf of Waitemata.

Construction of the Harbour Bridge in Auckland, New Zealand

The Royal Commission in 1946, a draft of the bridge across the Bay Waitemata. According to the bridge project, was to have six road lanes and sidewalks on both sides of the roadway. But because of the high cost, this project turned down and stopped on the economy version, with four lanes for cars and no sidewalks. The project is being developed by Freeman Fox & Partners, the company began construction contractor Cleveland Bridge Co., A supplier of steel was the company Dorman Long

Bike mileage on Harbour Bridge in Auckland, New Zealand

Contract with the contractor for the construction of the bridge was signed on 29 October 1954, the cost of work sochtavila? 3.465 million. May 1, 1955, the construction of the bridge starotovalo. Previously on the beach, going to steel bridge design, and then transported by barge to the installation site. Even in stormy weather did not stop the work and the building was completed nearly four years after the beginning of April 1959. May 30, 1959, the bridge was officially opened by the Governor General, Lord Kobhemom (Cobham)

Night view of the Harbour Bridge in Auckland, New Zealand

Harbour Bridge, built with four lanes, but the rapid development of the northern coast has led to a significant increase in traffic, and in 1969, 10 years after the opening of the bridge, it was decided to add 2 strips in both directions. Metal structures (known as Nipponclip-ons), produced a Japanese company Ishikawajima-Harima Heavy Industries. A few years later, after the addition of four new bands to be a problem and in 1987 work was carried out to eliminate cracks, which caused great pressure on the band added.

Kind of out of town on Harbour Bridge in Auckland, New Zealand

In 2007, authorities banned the movement of trucks for additional lanes of the bridge, to prevent the rapid destruction of structures Nipponclip-ons.

On the Harbour Bridge, currently located on a four-lane vehicular traffic in each direction. To increase the capacity at rush hour, uses a system of "tidal flow" - in one direction adds an additional lane. Because of frequent head-on collisions caused by vehicles leaving the oncoming lane, in the 90s of last century, on the bridge set up a mobile barrier.

Night Harbour Bridge in Auckland, New Zealand

During the day, the bridge transmits 168 754 cars, and the capacity of the bridge is 180 thousand cars.

Harbour Bridge

For the construction of such a massive bridge, as Harbor Bridge had to be dismantled about 800 houses, and in its construction were employed 1500 workers who worked 8 years. Not surprisingly, there was so much work is involved, because the total number of rivets in the construction of more than 6 million.

вторник, 25 октября 2011 г.

вторник, 25 октября 2011 г.