Believe Davis Grove Road Bridge over Park Creek listed as Philadelphia, PA should be Horsham Township, Pennsylvania not far from the Keith Valley Road Bridge also in Horsham Township, Montgomery County, Pennsylvania and I believe it is now closed to traffic.
Dark Hollow Road Bridge over the Neshaminy Creek in Bucks County, Pennsylvania no longer exists. Believe they were planning on daming up the creek but changed their minds. There is a bridge just above there on Mill Road which is still standing.
There is a new private suspension bridge over Unami Creek on Swamp Creek Road, Montgomery County, Pennsylvania, between two existing Stone Arched Bridges on that road. It goes between the road and a private residence across the creek. If you use your imagination and Live Earth it up from Sumneytown,PA you an just see it through the trees.