Building a building near Porter Square, Lego style

The old Bob Slate's site at 1971 Massachusetts Avenue, north of Porter Square, is getting redeveloped now.  It is a fascinating construction process, where prefab boxes each about the size of a small trailer are trucked in on the back of 18-wheelers, and then one-by-one lifted by crane into place. This allows the building to go up very very quickly. Since all these plywood boxes "snap together" so neatly, I can't help but think of it like a giant Lego set.

I watched some of this construction on Thursday, and here are photos from that experience ...