Cost/time overruns and political b.s. aside, it's a pretty impressive piece of engineering/construction. 160 ft below Park Avenue, carved into the rock below the existing infrastructure.
Going back in today, I'll see if I can get some pics of the process and the TBM's displayed in the "new" Madison concourse.
Going back in today, I'll see if I can get some pics of the process and the TBM's displayed in the "new" Madison concourse.