CRRC will build the world’s longest undersea high-speed rail tunnel in E-China’s Zhejiang province | So Good News


The construction and operation contract for the high-speed railway connecting Ningbo and Zhoushan in East China’s Zhejiang Province was finalized between the China Railway Construction Corporation (CRRC) and the Zhejiang local government, CRRC announced on Sunday via its official WeChat account.

The contract settlement means that the world’s longest underwater high-speed railway will soon enter the construction phase.

The Ningbo-Zhoushan Railway has a total length of 76,396 kilometers, starting from Ningbo East Station, going east to Jintang Island, Cezi Island and ending at Zhoushan Island. Bridges and tunnels together make up 90 percent of the entire railway with 36 bridges and 17 tunnels.

The railway will cross the 100,000-tonne Jintang Shipyard under water via a 16.18 kilometer long undersea tunnel. The CRRC will use a large shield tunneling machine to overcome the challenges, including a high volume of water traffic and complex subsea conditions.

The Ningbo-Zhoushan railway will be an important component of the local “1-hour transport circle”, which will accelerate Zhoushan to join the Belt and Road Initiative and the Yangtze River Economic Belt.

The contract covers a 36-year cooperation period that includes a six-year construction period and 30 years of operation of the Ningbo-Zhoushan railway.


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