Old float bridge across the Delaware River ???

While driving down to Delaware on vacation recently and crossing the Delaware Memorial Bridge, I noticed what appeared to be a floatbridge just north of the bridge on the Delaware bank of the river. Anybody know anything about this & it's history? Thanks.

IIRC the P & R had an operation at Pigeon Point at that location. For what or to where I'm not sure.

The Reading Railroad operated a car float there. It gave them access to the huge Dupont plant at Deepwater New Jersey.

http://www.abandonedrails.com/Millside_Line

I believe this operated until the mid 70s, the railroads demise, and absorption into Conrail.

The float bridge was owned by the Reading Rail Road. There was a tug boat and a couple of barges that moved tank cars from DuPont Chambers Works to Delaware and vice versa. Before unleaded gasoline they hauled anti-knock compound. Later it was anhydrous ammonia. There was a small yard near there too. Mostly empties waiting to go across the river.