The work to fill the Upper Fauntleroy sinkhole/gully (atop the Thistle hillside stairs, at Thistle/Northrop) is going well, according to an update we just got from Seattle Public Utilities senior engineer Jim Lee; photo above is from less than an hour ago. Jim e-mailed WSB with this update for everyone in the area:

The gully has been mostly filled in, except for the north head of the gully. We are planning on filling it in with Control Density Fill (CDF) and then starting sidewalk repairs. This should occur either today (if we are lucky and the crews can get CDF today) or by Monday (more than likely). Until then, the sidewalk and stairs will be closed. The temporary bridge was removed on Thursday so that crews could clean up all of the sidewalk concrete that had fallen into the gully.