On December 24, the twin pylons of the Qinglongmen Bridge, a key component of the second phase of the Ningbo-Zhoushan Port Liuheng Highway Bridge project, were successfully topped out with the final concrete pour. Jointly constructed by China Railway Construction Corporation Limited (CRCC) and China Railway Construction Port & Channel Engineering Bureau Group, this milestone marks the bridge's transition from "pylon erection" to "cable-stayed bridge formation," laying a solid foundation for the project's full completion.
Spanning the Qinglongmen Channel in Zhejiang's Zhoushan, the Qinglongmen Bridge connects Meishan Island in Ningbo with Fodu Island in Zhoushan. The main bridge stretches 2,212 meters, featuring dual main spans of 756 meters each. The newly completed diamond-shaped pylons on both the Meishan and Fodu sides stand 249 meters tall, with each pylon requiring 85,000 cubic meters of concrete and over 10,000 tons of steel.
The project team overcame three major challenges: millimeter-level precision control, ultra-high offshore construction, and complex marine conditions. Their deep integration of industry, academia, and research led to multiple technological breakthroughs. Notably, the tower crane deployed boasts a maximum rated load moment of 8,300 ton-meters and a lifting capacity of 320 tons—the highest in Zhejiang Province. By utilizing adaptive lifting tools, the team achieved "millimeter-level positioning" of steel components, effectively addressing the challenges of "heavy loads, extreme heights, and large spans."
To tackle harsh marine conditions, the team leveraged a comprehensive meteorological platform for cloud, rain, wind, and fog monitoring. They developed an intelligent offshore construction management system integrating "monitoring alerts, decision support, command dispatch, and precise control." This system enabled precise capture of limited construction windows and real-time coordination of over 30 engineering vessels, ensuring operational safety.
The 18.78-kilometer second phase of the Ningbo-Zhoushan Port Liuheng Highway Bridge links Liuheng, Fodu, and Meishan Islands. Upon completion, the bridge will significantly enhance transportation connectivity for Zhoushan's southern island chain, optimize spatial planning for the Zhoushan Archipelago New Area, and foster integrated development of port zones and industries across the three islands.
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