Ah ha. I figured that something major was happening with this. Sansom between 15th and 16th had been reopened to thru traffic since they made Oyster House and the others remove their Streeteries, but today the police had it blocked. Traffic was a complete disaster in that area today.
Speaking of traffic. 12th and Chestnut is gonna be the scene of a road rage shooting one of these days. It's been bad for a while now but people are so ornery and impatient over there between the merging and the inching along, waiting for pedestrians to cross and whatnot. Somehow they think that blasting their horns and flipping birds at each other is gonna open up that second lane.