Nongye road expressway project crosses over the north marshalling yard of more than 30 tracks and Beijing-Guangzhou railway in Zhengzhou, and the existing road under the bridge passes through under the Zhengzhou north marshalling yard. There are many frame bridges and road bridges at the work site and the number of feasible pier location for the bridge is very few, which challenges the construction of the bridge. Thus, it is absolutely necessary to study and choose a reasonable bridge type for the project. The researches on some feasible pier locations and the selection of feasible construction program and span arrangement result in the determination of 4 bridge types, and one reasonable bridge type is recommended after analysis and comparison in terms of railway safety, technology, schedule and economy. The results show that the ( 126+200+126 ) m twin tower cable-stayed bridge is the recommended bridge type. The research process and method employed may provide references for the design of similar projects.%郑州市农业路快速通道工程上跨郑州北铁路编组站30余股道线及京广铁路，同时桥下既有道路下穿郑州北编组站。桥址处密布框架桥、公路桥，桥梁建设的可行性墩位少，施工方案影响桥梁方案。研究并选择合理的桥梁方案对本工程十分必要。通过对桥址处多个可行性墩位的研究，选择合理的施工方案和孔跨布置方案，进而确定4个桥梁方案，再从铁路安全、技术、工期、经济等方面对桥梁方案进行详细的分析比较，推荐合理的桥梁方案。比选结果表明：(126+200+126) m双塔斜拉桥为推荐桥梁方案，该桥梁方案的研究过程及方法可为同类型涉铁工程设计提供参考和借鉴。
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