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Old 10-23-2015, 04:50 PM   #17
Dave R
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Originally Posted by upthesaukee View Post
Seeing these pictures makes me wonder why these pontoon bridges could not be used for temporary bridges today. If they can move tanks across them, why not today's traffic. I was always amazed by the pictures of these bridges when I was a youngster.

Thanks for posting all the pics.
There are permanent floating bridges in use today. I drove on one on Interstate 90 in Washington state. It crosses Lake Washington by Seattle.

Most temporary bridge solutions are designed to not block navigation and to stay in use for months, that's why they use metal trusses and place them high. A temporary floating bridge is very temporary and has to be managed carefully as water levels change. You also need fairly flat entrances and exits for them to work with cars. The military vehicles that typically cross them are much more capable off-road than they typical American family car.
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