China just opened the world's longest sea bridge. It cost $20 billion and is 20 times as long as the Golden Gate Bridge.
Business Insider -

Bobby Yip/Reuters

After nine years of construction and controversy, China officially unveiled the world's longest sea bridge at an October ceremony in Hong Kong.

At more than 34 miles long, the Hong Kong-Zhuhai-Macau Bridge is part of a master plan to create a global science and technology hub by connecting two Chinese territories, Hong Kong and Macau (the world's largest gambling center), to nine nearby cities.

With an economic output of $1.5 trillion, the new mega-region — known as the Greater...


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