Eighteen years Although it is considered a Scottish classic, it was planned by two English engineers, Sir John Fowler and Benjamin Baker, and took eight years to complete at a cost of PS3.2 million. Seventy-one employees are reported to have died while working on the project. It is said that you can see the bridge from space because of the dark blue lines on the sand dunes near its end.
The Forth Bridge is a suspension bridge over the River Forth in Scotland. It connects the cities of Edinburgh and Fife. Opened in 1867 by Queen Victoria, it is the oldest surviving major bridge across the English Channel as well as the European river mainstem. The longest suspension bridge in Europe, it also holds the record for being the world's largest single-span, non-tunneled arch bridge structure.
Its construction started with an order from the Edinburgh & Glasgow Railway (later part of the West Coast Main Line), which wanted a crossing over the River Forth for their line between Edinburgh and Perth, Scotland. The railway company had approached several prominent British civil engineers, but all of them declined the job because they could not find any good reason for building such a thing. So the job went to two foreign engineers: John Fowler, who designed the Bayonne Bridge over the Adour River in France, and Benjamin Baker, who worked on several other bridges in Britain and Ireland before coming up with this idea.
Four (4) years To construct her, it took four years, 3,500 employees, 895,000 drawings, 71,300 tons of structural steel, 931,000 tons of concrete, 42,000 miles of cable wire, 4,851,700 steel rivets, 1,016,600 steel bolts, and, unfortunately, the lives of three men who perished on the job.
The Mackinac Bridge is a world-famous structure that connects the Upper Peninsula of Michigan with the lower peninsula. It crosses over the Straits of Mackinac which connect Lake Michigan to Lake Huron. The bridge is named after its primary builder, William A. Mackinaw. It was completed in July 1957 and has been praised for its beauty and innovation since it opened to traffic.
The bridge consists of two parallel main trusses that carry six wide lanes of traffic each. The main suspension span is about 1,100 feet long and rests on top of eight massive piers. Each pier is like a giant elevator car carrying the bridge deck up toward the sky or down into the water. The main trusses are connected by nine vertical suspender cables attached to both ends of the bridge. These cables hold the weight of the roadway above them while the wind blows across the upper surface of the trusses.
Four (4) years Dorman Long and the Cleveland Bridge & Engineering Company were the contractors for the bridge, which took four years to complete. Hundreds of laborers were hired on the project, including 180 workers sent from the United Kingdom. Strikes by employees in 1956 and 1957 hampered progress. The last load of cement was placed into the foundation stones on August 15, 1958.
The total cost of the bridge was $7 million ($70 million in 2007). At the time, this was considered a huge investment for New Zealand, but now looks like good value for money considering the benefits it has provided to transport and tourism in Auckland.
Construction began on January 16, 1936 and the bridge opened for traffic on March 12, 1940. It was the longest suspension bridge in New Zealand at the time of its construction and remains so today. The main span is 1,200 feet (365 m) with side spans of 400 feet (122 m). There are 14 vertical suspenders supporting the main cable bed.
Auckland is one of the most expensive cities to live in New Zealand. However, thanks to the harbor bridge, transportation costs are low compared to other cities in New Zealand. In addition, the bridge has reduced congestion on local roads and made the city center more accessible. These factors have helped make Auckland one of the most attractive cities in New Zealand.
Eighteen years The Sydney Harbour Bridge began construction on July 28, 1923, employing 1,400 employees and taking more than eight years to complete at a cost of more than PS10 million. The bridge was opened by the New South Wales governor, Sir Gerald Strickland, on November 17, 1931.
It was an immediate success. When it was first opened, hundreds of thousands of people crossed the bridge each week, and by 1939, there were almost 800,000 crossings a year. The number of vehicles crossing the bridge has increased steadily since then, but even today, more than half of all traffic crosses the bridge and its approaches.
Its official name is the Harbor Bridge. It connects the eastern and western shores of Sydney Harbour, forming a link between Lane Cove River and Middle Harbour River. The bridge is 888 feet (275 m) long and consists of three main sections: a central section consisting of two parallel trusses with a gap in between; and two end sections which are one-way bridges with roadways that run along the edge of the water. The entire structure stands on piers that extend out from the Middle Harbour and Lane Cove Rivers about 500 feet (150 m).
It took them far more time to create the blueprints - there were 11 modifications before they arrived at the final design - than it did to install them. The demolition of the old bridge and building of the new bridge took only 43 hours. It's estimated that the first bridge built by Mao Zedong lasted for only 15 years.
This is because Mao wanted to show the world that communism was better than capitalism, so he had all sorts of experiments conducted on the people under his rule. Some experiments worked and some didn't, but nobody dared say no to Mao. For example, when Mao decided that it would be good for the country if everyone could read, many books were printed even though there weren't enough readers to go around.
Mao also tried to improve living standards by introducing new farming techniques. But instead of helping the people, these new methods only increased the amount of work required to grow food, thus causing more deaths by starvation.
In addition to being responsible for killing through starvation and experimentation, Mao also has been accused of murder himself. His wife, who was named Zhu Shuzhen after their marriage in 1919, has been suggested as one of the causes of his death due to poisoning.