We’re used to seeing repeat Construction Site Du Jour winners in what we might call the Williamsburg Triangle of Death–an area with frequently wide open construction and demolition sites between Driggs Avenue on the west, Manhattan Avenue on the north, the BQE on the east and N. 8 Street on the south. (Some of the site earn violations from the Department of Buildings, a few are fairly ignored.) Today, we have 544 Union Avenue, which is a first time winner thanks to its open fence. On the bright side, we finally got an up close at what’s been happening on the site of a coming six-story condo.