this type of pontoon bridge maintains bouyancy with submerged pontoons that exceed the load bearing and are kept in place with anchors, thereby providing stability during fluctuating sea conditions, such as waves, as well as not being effected by forces applied to the bridge from cars and trucks because the submerged sections bouyancy exceeds the load bearing at any point, so the force that is provided by the submerged section exceeds the force being applied to the road by the car or truck, so the road does not move up or down and is stable, the bouant side sections provide added stability for the roadway, this could also be a cheap air craft carrier for your armed forces as it is less vulnerable than existing and obselete air craft carriers, with planes being loaded onto the air strip from a submarine or other that is more tactically suitable. and at eleven hundred dollars a metre of bridge, your air craft carrier could be as cheap as three hundred thousand dollars to land cargo planes comfortably eliminating the need to come to port, or being reliant on deep sea ports that may be enemy targets. this is a pontoon bridge proposal for an opening bridge to be constructed between Spain and Morocco, including a conceptual model of the bridge and function, this is a viable option it would be a valued trade link and would enable tourism as well as trucks that are soon to operate on hydrogen from tap water and electric trucks to operate making trucking that much more viable ...
http://www.youtube.com/watch?v=IkidLPK2-eE&hl=en
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