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The spelling "ponton" in English dates from at least 1870. The decking may be temporary or permanent, and constructed out of wood, modular metal, or asphalt or concrete over a metal frame. The supporting boats or floats can be open or closed, temporary or permanent in installation, and made of rubber, metal, wood, or concrete. The water buoyancy supports the boats, limiting the maximum load to the total and point buoyancy of the pontoons or boats.
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Generally not, but may have movable sections for watercraft passageĪ pontoon bridge (or ponton bridge), also known as a floating bridge, uses floats or shallow- draft boats to support a continuous deck for pedestrian and vehicle travel. Various: steel, concrete, boats, barrels, plastic floats, appropriate decking material United States Army troops cross the Rhine on a heavy pontoon bridge during Operation Plunder, March 1945