en.Wedoany.com Reported - On June 23, 2026, with the synchronized lifting of the final two steel box girders into place, the main bridge of the Qinglongmen Bridge—the world's largest-span three-tower steel box girder cable-stayed bridge—successfully closed, marking the completion of the main structure construction. Located in the Qinglongmen water area of Zhoushan, Zhejiang Province, the bridge connects Fodu Island in Zhoushan with Meishan Island in Ningbo, serving as a key control node of the second phase of the Liuheng Highway Bridge project on the Ningbo-Zhoushan Port.

The Qinglongmen Bridge has a total length of 2,212 meters, featuring a three-tower, double-cable-plane full-width steel box girder cable-stayed design with two main spans of 756 meters each. The three main towers, each reaching a height of 249 meters, are constructed as diamond-shaped steel-concrete composite structures. The bridge is jointly built by China Railway Construction Bridge Engineering Bureau Group and China Railway Construction Port and Channel Engineering Bureau Group.

The Qinglongmen Bridge is a critical cross-sea passage connecting Ningbo and Zhoushan as part of the Liuheng Highway Bridge. The Liuheng Highway Bridge project is constructed in two phases: Phase I, the land-based highway connection on the Ningbo side, opened to traffic on June 6, 2025; Phase II, the cross-sea island-connecting project, includes two world-class sea-crossing bridges—the Shuangyumen Bridge (a single-tower steel box girder suspension bridge with a main span of 1,768 meters) and the Qinglongmen Bridge—and is scheduled for completion by the end of 2027.

Upon completion, the project will end the lack of highway access to Meishan, Liuheng, and Fodu islands, further improving the collection and distribution network of the Ningbo-Zhoushan Port. As a key component of the "Yiwu-Ningbo-Zhoushan" open corridor, the second phase of the Liuheng Highway Bridge is a significant project under the national "Belt and Road" initiative and the "Yangtze River Economic Belt" strategy. The completion of the bridge will play a vital role in optimizing the spatial layout of the Zhoushan Islands New Area, building a modern marine industry base, and promoting the integrated development of the port areas and industries across Liuheng, Fodu, and Meishan islands. The successful closure of the main bridge has laid a solid foundation for the timely opening of the second phase of the Liuheng Highway Bridge on the Ningbo-Zhoushan Port.

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