On December 18, with the installation of the last highway crossbeam in place, the first batch of steel truss girders for the Sanmenxia Yellow River Rail-Road Bridge—a control project of the Menghua Railway and the world's largest-span incremental launching project manufactured by China Railway Jiujiang Bridge Engineering Co., Ltd., a member enterprise of China Railway Industry—was installed and launched into place ahead of schedule. The bridge is also the eighth extra-large bridge built by China Railway Jiujiang Bridge Engineering over the Yellow River.
　　The Sanmenxia Yellow River Rail-Road Bridge is a control project on the entire Menghua Railway line and a shared bridge for the railway coal transport corridor from West Inner Mongolia to Central China, the Yuncheng–Sanmenxia Railway, and the Yuncheng–Sanmenxia Expressway crossing the Yellow River. The bridge is a combined rail-road structure, with the combined rail-road section measuring 1,762.733 meters. The railway has four tracks, and the highway has six lanes in both directions, involving many and complex bridge structure types. The steel truss girder bridge is 1,142.5 meters long. China Railway Jiujiang Bridge Engineering was contracted to manufacture five spans of steel girders (84 m + 4×108 m) near the Yuncheng side, totaling approximately 21,000 tons of steel girder manufacturing work.
　　The steel girders of the Sanmenxia Yellow River Rail-Road Bridge weigh approximately 44,500 tons in total and are all constructed using the incremental launching method. The bridge is also the continuous steel truss girder bridge with the longest launching length, the heaviest weight, and the largest design live load in the world. After receiving the manufacturing task for the bridge, company leaders attached great importance to it and assigned personnel with strong professional skills and solid business qualifications. From project preparation to welding procedure qualification and then to the formulation of manufacturing processes, dedicated personnel were responsible throughout. During the manufacturing of steel truss girder members, elite teams and highly experienced operators were organized to handle cutting, assembly, welding, drilling, coating, and transportation, ensuring close coordination among all processes during manufacturing. For product quality control, a special inspection team was established to work together with supervisors and resident factory representatives to strictly control product quality, ensuring that all components leaving the factory are 100% qualified.
　　In terms of follow-up product services, China Railway Jiujiang Bridge Engineering has always upheld the firm belief of building quality projects and serving customers. Since the start of the project, it has established the Sanmenxia Yellow River Rail-Road Bridge Project Department, specifically responsible for component transportation, on-site assembly guidance, and various service tasks. From the arrival of the first component at the installation site in March this year to December, a period of 10 months, the transportation task of 21,000 tons of steel girders was completed, providing assurance for smooth on-site erection and incremental launching.
　　The company was the first to complete the installation and incremental launching of the first batch of steel truss girders, and received commendation notices from the Fourth Engineering Co., Ltd. of China Railway Construction Bridge Engineering Bureau Group and the Menghua Railway MHTJ-13 Section Project Management Department, which called on all construction teams to learn from China Railway Jiujiang Bridge Engineering and from the company's on-site responsible person.