Jianzha Yellow River Bridge
The Jianzha Yellow River Bridge is an under-construction steel railway bridge of the Sichuan–Qinghai railway across the Yellow River located on the border of Jianzha county, Huangnan prefecture and Hualong county, Haidong city, both in Qinghai, China.
The bridge is to be long, with a span of.
The bridge is being constructed by, and was scheduled to be completed by the end of August 2025.
When completed, it will be China's first railway continuous truss arch bridge across the Yellow River and the world's largest double-track continuous steel truss arch bridge.
Construction
On December 2, 2023, all the foundation of the main pier of the bridge was poured, marking the formal start of the construction of the upper part of the bridge.
Collapse
At around 3:10 a.m. local time on August 22, 2025, a steel cable broke during construction of the bridge, causing the middle of the bridge's arch section to collapse. There were 15 workers and a project manager working at the time of the collapse. Twelve people died and another four were reported missing. Rescue efforts involved 806 personnel supported by 91 vehicles, 27 boats, one helicopter and five robots. Six local hospitals opened green channels to carry out medical treatment. An investigation team composed of four specialized units that focus on coordination, technical analysis, management review, and rescue evaluation was established by the Qinghai government. The Office of the Work Safety Commission set up a working group with related authorities to guide the investigation into the accident. A report on the causes and responsibilities of the accident, as well as recommendations for disciplinary and legal actions will be released promptly.