I asked one of the workers yesterday if the retaining wall would be coming down soon, and he said that for the next couple of weeks they'll be preparing to take the wall down by adding rebar tiebacks as reinforcement, then digging some more, then adding more tiebacks. This worker is cutting openings for the tiebacks in the steel panels: you can see the most recently completed hole on the right and the outline of where the next will go on the left. The big blue machine pictured yesterday is used to install the tiebacks.
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This blog exists for one purpose: to follow the progress of the CTA substation project. Your comments relevant to that topic are very welcome.