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kleinbl00  ·  3444 days ago  ·  link  ·    ·  parent  ·  post: Seattle may join the super tall skyscraper club

Most of Seattle's tunnels are cut and cover, though. That allows you to bank and stuff. I-90? Cut'n'cover. 99 under downtown? Cut'n'cover. The drilling process they're using is the same one they used for the Brightwater conveyance corridor and that didn't go so smoothly.