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　　Arch bridges are among the many classic architectural works that you can see throughout history, which many of them were inspired by Roman Empire architecture. earliest arch bridges were built by the ancient Greeks and Romans. So arch bridges came into being thousands of years ago. Back then, these bridges were mostly made of bricks or stones, and were highly popular. Later, with the industrial revolution and the introduction of new materials, other advanced bridge types and designs were introduced. However, arch bridges are still being used. With the introduction of concrete, steel and other new materials, their arches are built on a much larger scale.

　　Arch bridges are characterized by their arches or curved designs that give them strength. As a result of this curving or bending, the load force isn’t pushed straight downwards, or rather, it is carried or transferred along the arch curve to the supports or abutments(桥墩)present at each end of an arch bridge. This semi-circular structure thus enables a higher level of resistance to the bending force which may have altered or changed the bridge. In other words, the force acting on the bridge horizontal is distributed equally.

　　Also, there are many different building materials for arch bridges. They can be built using a wide range of materials that include natural ones like stones, bricks, etc., as well as man-made materials like reinforced concrete or steel. Natural or local materials aid in sustainability and are strong in compression.

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