A bridge has three things to complete the foundation to keep it from collapsing. They are called spread footings, caissons and piles. It also has the deck itself.
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All these components are also very carefully designed to withstand the various stresses that they will bear in service.
Bridges collapse because of the low level of structure and equipment.
ANSWER: Bridges collapse if the math was wrong, if the math was right it may have been built incorrectly and they collapse because the structure has been compromised. Some day Congress will pass an Constitutional Amendment declaring pi to be an even 3.0 to make it easier on public school teachers and civil servants. Then bridges will collapse all the time, except for the outlaw bridges built using the correct math.
Bridges do not float on the surface of water, they are anchored into the bedrock below the body of water. These bases are usually formed of insoluble, non-anaerobic substances that won't dissolve or rust. Some do, they are used by the military.
bridges are bilt so people can get another side of water or if there is a big ditch you would need a bridge so you could get across
Well it depends on what type of bridge. Most bridges stay up with pillars, the reason they can hold up a bridge is because of the force between the bridge and the ground.
Structural support in the form of columns, towers, steel cable, and anchoring pins.
Bridges that are built today that are in seismic areas are engineered to withstand the anticipated forces of an earthquake. How this is done depends upon the type of bridge.
Modern arch bridges are held up by trusses. Typically these bridges span from two hundred feet up to eight hundred feet, or 4 meters. Arch bridges are smaller and span more narrow bodies of water.
arch bridges can support more weight than beam bridges but for price i say beam won.
bridges connect land masses
Bridges get their name by the kind of bridge they are
Abon Bridges
where did ruby bridges stay at
Certainly some bridges can. Swing bridges, bridges that raise up, these though, stay in one location. Pontoon bridges are capable of being moved from place to place and are in use worldwide.
there poles sink deep through the mud and soil to create a firm strong bridge
the fact that you have to connect the two bridges and then the beams will need more support in order to stay strong.
There are certain bridges that raise and lower to allow tall ships to pass, but in general, bridges stand up because of the structure holding them up.
cable stay, arch, suspension, box girder
The Lloyd Bridges Show - 1962 Yankee Stay Here 1-9 was released on: USA: 13 November 1962
About 400 bridges connect the 118 islands that make up Venice.
Bridges dont collapse because there are many supportive links below it that hold it up...also for bridges without supports underneath, (usually small bridges) have concreton sold ground holding it up
They are liable to collapse.
first of all don' t do my girl like that second look up ruby bridges and find out.
Ruby Bridges stood up for herself and all of the blacks.