Bridges are considered one of the best solutions offered by civil engineers to facilitate traffic flow and alleviate street congestion, and they are also essential for connecting the two sides of a waterway. If you want to build a bridge, you need to familiarize yourself with these terms (rails—arch shapes—steel frames—suspension methods), as all bridges consist of a harmonious combination of these basic components, ranging from the simplest to the most complex designs. All bridges are subjected to two important types of forces: tensile force from below and compressive force from above.

Types of Bridges

Beam Bridge:

This is considered the simplest type of bridge; all it requires is a solid beam between two supports—one at its beginning and the other at its end—with the calculations and distances between the supports based on the weight and loads that will affect it in the future.

Metal-Truss Bridge:

We often see these bridges built over small bodies of water, where railroad tracks are laid; they can be made of wood, but it is more common to use steel in their construction.

Arch Bridges:

The arch shape has been used in architecture for two thousand years; it consists of a semicircle that distributes pressure evenly, with its weight distributed across its two supporting ends.

Suspension Bridges:

As the name suggests, these bridges suspend the roadway using cables or chains attached to main towers, which support it according to specific calculations,

Often, only two towers support the cables that hold up the roadway; these towers bear most of the compressive force resulting from the weight of the bridge, while the steel cables or chains bear the tensile force acting on the bridge, and the span of a suspension bridge can reach up to 7,000 feet.

Bridges offer numerous benefits to citizens’ lives by facilitating their movement and alleviating traffic congestion caused by various vehicles, especially in cities with high population densities or those with waterways, and vibration is perhaps the most serious threat facing bridges; therefore, regular maintenance is the key to preserving them and ensuring their continued operation.