S3公路（周邓公路-G1503公路两港大道立交）新建工程高速公路主线施工1标起始于周邓公路，止于下盐公路北，全长5.15公里，主要施工内容包括主线高架、2对平行上下匝道以及S3-S32互通立交。首片长33米、重116吨的钢结构已吊装就位，标志着本工程上部结构施工全面展开。详见↓
吊装现场
项目高架立交施工全程采用预制装配，预制率达90%以上。桥梁下部结构立柱、盖梁以及桥梁上部结构小箱梁、组合梁、钢箱梁、桥面板等部分都是预制构件。采用大型运输工具，运输至施工现场，采用机械化施工方法，像“搭积木”一样实现桥梁构件的预制拼装。
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