New Baishatuo Yangtze River Bridge is a twin-tower double-row double cable plane, double railway steel girder cable-stayed bridge with main span of 432m. In order to reduce member internal force, the midspan closure adopts"adaptation method". Based on monitoring data and analysis, the closure measures are formulated. The closure steps are strictly followed. Stress free closure with closure bar is realized, which provides reference for similar project in the future.%新白沙沱长江特大桥为双塔双排双索面、双层铁路钢桁斜拉桥，主跨432m。为尽量减少杆件内力的产生，本桥中跨合龙采用“适配法”的方式进行合龙。根据监控量测数据，严密分析，制定了相关合龙措施，严格按照合龙步骤操作，实现了利用合龙杆件的无应力合龙，为以后类似桥梁的合龙提供了借鉴经验。
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