Recently, the Luhe Grand Bridge—the largest-span bridge along the entire Xi’an–Yan’an High-Speed Railway—successfully achieved closure, marking a critical milestone in the project’s construction. Spanning approximately 2.3 kilometers with a main span of 360 meters, it is currently the longest-span concrete continuous rigid-frame bridge for ballastless-track high-speed rail in China. Advanced cantilever casting techniques using hanging baskets were employed to overcome challenges posed by complex terrain and ecological conservation requirements. Aerial footage vividly captures the bridge’s majestic presence as it stretches across the Luhe River gorge, resembling a steel dragon winding through lush mountains and clear waters. The Xi’an–Yan’an High-Speed Railway, about 300 kilometers long with a design speed of 350 km/h, will significantly reduce travel time between northern Shaanxi and the Guanzhong region upon completion, boosting regional economic development and red tourism. As a controlling engineering segment of the line, the successful closure of the Luhe Grand Bridge lays a solid foundation for the railway’s full operation scheduled for 2025.
近日，西延高铁全线最大跨度桥梁——洛河特大桥成功合龙，标志着该高铁建设取得关键性进展。该桥全长约2.3公里，主跨达360米，是目前中国高速铁路无砟轨道桥梁中跨度最大的混凝土连续刚构桥。采用先进的挂篮悬臂浇筑工艺，克服了复杂地形和生态保护等多重挑战。航拍画面清晰展现了桥梁横跨洛河峡谷的雄伟姿态，宛如一条钢铁巨龙盘踞于青山绿水之间。西延高铁连接西安与延安，全长约300公里，设计时速350公里，建成后将极大缩短陕北与关中地区的通行时间，促进区域经济发展与红色旅游融合。洛河特大桥作为全线控制性工程，其顺利合龙为2025年全线通车奠定了坚实基础。
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