The question remains: "When is the wall coming down?" And the answer is still: "In a couple of weeks." More tiebacks need to be installed, along with walers. At this point i must confess that until today i had never heard of walers; i knew about whalers from reading Moby Dick, and about Wailers from listening to Bob Marley, but i had to come home and google "walers" to learn that they are the horizontal pieces that will work with the tiebacks to help support the earth beneath the L tracks as the dirt and retaining wall are removed. The dirt will continue to be excavated, eventually leaving a hollow area behind the retaining wall; once that dirt is completely dug out and sent to the place where old dirt goes to die, the wall itself will be brought down.