Core Insights - The construction of the Panlong Liujing Grand Bridge, a key project of the Liuzhou-Guangzhou Railway, has made significant progress with the completion of the last weld on the main bridge's steel box girder [1][2] - The bridge spans 3,787.424 meters, with the main bridge measuring 629 meters and a main span of 326 meters, featuring a steel-concrete hybrid box girder design [1] - The project is crucial for enhancing regional transportation networks and integrating areas into the Guangdong-Hong Kong-Macao Greater Bay Area [2] Construction Details - The bridge's main towers are 158 meters and 155 meters high, requiring precise control of vertical transport and construction techniques due to complex cross-sections and angles [1] - Advanced technologies such as electromagnetic wave cross-hole CT and a combination of full rotation and rotary drilling techniques were employed to navigate challenging geological conditions [1] - The construction team implemented a smart climbing system to improve structural rigidity and control line shape accuracy to millimeter levels [1] Project Significance - The Liuzhou-Guangzhou Railway, with a total length of 238.167 kilometers, is designed for a target speed of 160 kilometers per hour and will serve both passenger and freight transport [2] - The project has completed an investment of 23.812 billion yuan, accounting for 70.30% of the total estimated investment of 33.872 billion yuan [2]