为了提升效益，铁路货运需要开行双层集装箱列车，而上跨铁路立交桥桥下净空不足。
For greater benefit, the railway freight requires operation of double-decked container trains, making the clearance under the railway overpass insufficient.
该桥为目前世界上跨径最大的拱桥。
The bridge is the world's largest span arch bridge at precent.
荆州长江公路大桥是江汉平原上的重要跨江通道，设计为斜拉索混凝土桥。
The Yangtze River highway bridge of Jingzhou is an important passageway crossing the River in the Jianghan plain, which is designed as cable-stayed concrete bridge.
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