


【渝昆高铁江底牛栏江特大桥合龙】财联社9月7日电,由中铁二局承建的渝昆高铁江底牛栏江特大桥9月7日实现全桥合龙。大桥的合龙标志着桥隧占比高达87.4%的渝昆高铁建设取得关键性突破,为全线按期建成通车奠定了坚实基础。
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