A bridge is a structure designed to provide continuous passage over something. Bridges usually carry trains, cars, water, or power lines. There are about eight kinds of bridges, beam, cantilever, arch, truss, suspension, cable-stayed, movable, and floating bridges. Beam bridges are the most simple to build bridges. It is just a beam that is supported at both ends. These were the first bridges to be used. Beam bridges are the most commonly used in highway …showed first 75 words of 538 total…

…showed last 75 words of 538 total…costly or impractical to build a bridge with a high enough clearance. One example of a swing bridge is in Fort Madison, Iowa. Floating bridges are formed buy floating objects and placing a deck on top of them. Some floating bridges are made buy floating boats with a deck on top, others have pontoons. This is used were water is too deep or It is just temporarily there. They are commonly used for the military.