What If You Are A Bridge?
Bridges are structures built over a river, railroad track, road, or some other obstacle. They allow people or vehicles to cross from one side to another. Bridges are structures used by people and vehicles to make crossing areas easier in travel. Engineers build bridges over rivers, lakes, ravines, canyons, railroads, and highways. Bridges must be built strong enough to safely support their own weight as well as the weight of the people and vehicles that pass over it. The bridge must also withstand natural occurrences that include weathering, earthquakes, strong winds, and freezing and thawing.Bridges have been an essential part of transportation for hundreds of years, and it is the job of civil engineers to design the safest, most durable bridges possible. This site provides a differentiated lesson plan for investigating bridges.Many people are walk by using the bridge if you are a bridge do you feel you are use to save people to the deep river or to the high places?