The buoyant arch pontoon bridge is a pontoon bridge similar to many others but with deep over-buoyant pontoons pushing the deck up into the shape of an arch, in permanent tension because the pontoons are so buoyant. So the deck doesn't go up or down; it's tied down to the river banks. Long crossings can be made with a series of arches; where they meet the pontoon is anchored down to the river bed with big piles. Simple. Excellent.
-- Harry Mudd, Aug 22 2007

A nice bit of thinking, but the sections of a pontoon bridge are not usually rigidly fastened together.

BTW, one doesn't usually rate one's own idea as excellent.
-- marklar, Aug 22 2007


Maybe there's two of him.
-- baconbrain, Aug 22 2007


yes, like Dr. Harry and Mr. Mudd.
-- k_sra, Aug 22 2007



random, halfbakery