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 ==
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. Thirteen people died and another three 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. The investigation concluded that the accident was caused by substandard bolts used in the construction of a temporary tower, together with subpar manufacturing and installation quality of the top distribution beam. The report also said that the construction, design, supervision and other relevant parties failed to perform their safety production responsibilities adequately, while the industry regulatory authorities did not properly fulfil their supervisory duties. == References ==