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Pile Foundation Completed for the Hangzhou Bay Cross-Sea Railway Bridge

Updated: September 11, 2025

The pile foundation for the Hangzhou Bay Cross-Sea Railway Bridge, currently the world’s longest cross-sea railway bridge, has been completed.

Constructed by CCCC Second Harbor Engineering Company Ltd., a subsidiary of China Communications Construction Company Limited, the project has moved on to constructing the upper structure, including tower columns and box girders.

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Bridge piers of the Hangzhou Bay Cross-Sea Railway Bridge stretch across the bay at sunset. [Photo/sasac.gov.cn]

The 29.2-kilometer bridge, a critical project of the new Nantong–Ningbo High-Speed Railway, links Haiyan in Jiaxing and Cixi in Ningbo, with a designed speed of 350 kilometers per hour.

The bridge is scheduled for operation by the end of 2027.

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A view of the Hangzhou Bay Cross-Sea Railway Bridge [Photo/sasac.gov.cn]

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The 29.2-kilometer bridge, a critical control project of the newly built Nantong–Ningbo High-Speed Railway, links Haiyan in Jiaxing and Cixi in Ningbo. [Photo/sasac.gov.cn]

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Construction site of the Hangzhou Bay Cross-Sea Railway Bridge [Photo/sasac.gov.cn]

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Construction site of the Hangzhou Bay Cross-Sea Railway Bridge [Photo/sasac.gov.cn]



(Executive editor: Yuan Ting)