USA
SAFETY FIRST Deep excavations that involved moving 575,000 cubic yards of dirt and work near live UPRR tracks placed safety at the top of this project ’ s “ key challenges ” list . Relocating sewers and trench drains required shoring excavations more than 40 feet deep , and the Rubio shoofly bridge required excavating within 12 feet of live track . During shoring excavation , crews encountered poor / undocumented soil conditions
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