About a month ago, I went for a trip on the delta of the Po. With the car, I crossed for the first time in my life, a “pontoon bridge” (in Italian “Ponte di Barche”). But what is it? A pontoon bridge or floating bridge, uses floats or shallow-draft boats to support a continuous deck for pedestrian and vehicle. The buoyancy of the supports limits the maximum weight they can carry. Most pontoon bridges are temporary, used in wartime and civil emergencies….