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China to build world’s longest underwater high-speed rail tunnel

A project to construct China’s first undersea high-speed rail tunnel in eastern Zhejiang Province was approved,  according to The Paper digital newspaper. Investments in the project will amount to over $4 billion.
Construction of the Jintang undersea tunnel is expected to start this year, while the overall project will take six to seven years to complete.
With a maximum depth of 78 meters and a diameter of 14 meters, the 16.2km-long tunnel will be the world’s longest undersea tunnel for high-speed rail upon completion. It will link the Jintang island of Zhoushan and the coastal area of Ningbo.