August 11, 2015
The World's 25 Most Impressive Megaprojects
The biggest and boldest projects on the planet
Panama Canal Expansion, Panama
Cost to build: $5.25 billion
The Panama Canal is so 1914. That's why the expansion project, set to complete in 2016, will carve out a new 3.8-mile-long channel for new locks—which require 4.4 million cubic meters of concrete—and widen and
deepen what is already there. Ships have grown a lot over the past century, and so the world's most famous canal must do the same to keep pace, even if that does mean whittling away more of Panama.
Port Mann Bridge, Vancouver, B.C.
Cost to build: $1.93 billion
The widest bridge in the world (until the Bay Bridge's east span recently opened), the bridge east of Vancouver, B.C., which opened in 2012, remains the second-longest bridge in North America. The cable-stay bridge uses an impressive 288 cables to reach a total bridge length of 6,866 feet.
B.C. Ministry of Transportation and Infastructure/Flickr
Three Gorges Dam, China
Time to build: 17 years
Cost to build: $22 billion
We can't even comprehend the amount of concrete needed to construct the world's largest dam. Standing on China's Yangtze River, this 17-year, $59 billion project measures 595 feet tall, 131 feet wide, and more than 7,600 feet long, with 32 main turbines producing electricity.
Getty ChinaFotoPress
One World Trade Center, New York
Time to build: 7 years
Cost to build: $3.8 billion
The tallest building in the Western Hemisphere rises a symbolic 1,776 feet above New York City. The largely steel structure also includes a concrete core that provides additional security and strength. It's almost as if there's a second skyscraper within the first.
Aizhai Suspension Bridge, China
Time to build: 5 years
Cost to build: $600 million
The world's highest bridge, connecting two tunnels in China, is also one of the world's longest suspension bridges. Opened in 2012, the bridge sits 1,200 feet over the Dehang Canyon and spans a tower-to-tower distance of 3,858 feet. The mountains on either side anchor the suspension towers.
Marmaray Tunnel, Turkey
Time to build: 9 years
Cost to build: $4.5 billion
It took nine years and $4.5 billion to build, but the 47-mile underwater railway tunnel connects the European and Asian sides of town, giving Istanbul a new rail line into and out of the city when it opened in 2013.
http://www.popularmechanics.com/technology/g2121/the-worlds-25-most-impressive-megaprojects/
The World's 25 Most Impressive Megaprojects
The biggest and boldest projects on the planet
Panama Canal Expansion, Panama
Time to build: 11 years
Cost to build: $5.25 billion
The Panama Canal is so 1914. That's why the expansion project, set to complete in 2016, will carve out a new 3.8-mile-long channel for new locks—which require 4.4 million cubic meters of concrete—and widen and
deepen what is already there. Ships have grown a lot over the past century, and so the world's most famous canal must do the same to keep pace, even if that does mean whittling away more of Panama.
Port Mann Bridge, Vancouver, B.C.
- Time to build: 6 years
Cost to build: $1.93 billion
The widest bridge in the world (until the Bay Bridge's east span recently opened), the bridge east of Vancouver, B.C., which opened in 2012, remains the second-longest bridge in North America. The cable-stay bridge uses an impressive 288 cables to reach a total bridge length of 6,866 feet.
B.C. Ministry of Transportation and Infastructure/Flickr
Three Gorges Dam, China
Time to build: 17 years
Cost to build: $22 billion
We can't even comprehend the amount of concrete needed to construct the world's largest dam. Standing on China's Yangtze River, this 17-year, $59 billion project measures 595 feet tall, 131 feet wide, and more than 7,600 feet long, with 32 main turbines producing electricity.
Getty ChinaFotoPress
One World Trade Center, New York
Time to build: 7 years
Cost to build: $3.8 billion
The tallest building in the Western Hemisphere rises a symbolic 1,776 feet above New York City. The largely steel structure also includes a concrete core that provides additional security and strength. It's almost as if there's a second skyscraper within the first.
Aizhai Suspension Bridge, China
Time to build: 5 years
Cost to build: $600 million
The world's highest bridge, connecting two tunnels in China, is also one of the world's longest suspension bridges. Opened in 2012, the bridge sits 1,200 feet over the Dehang Canyon and spans a tower-to-tower distance of 3,858 feet. The mountains on either side anchor the suspension towers.
Marmaray Tunnel, Turkey
Time to build: 9 years
Cost to build: $4.5 billion
It took nine years and $4.5 billion to build, but the 47-mile underwater railway tunnel connects the European and Asian sides of town, giving Istanbul a new rail line into and out of the city when it opened in 2013.
http://www.popularmechanics.com/technology/g2121/the-worlds-25-most-impressive-megaprojects/