日前,珠三角環線東莞至深圳高速公路塘廈至東城段及龍林支線改擴建工程
(簡稱“莞深高速改擴建工程”)迎來關鍵節點——龍林支線新建田心互通首節鋼箱梁成功架設,標志著B匝道正式進入上跨既有高速主體施工階段。
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