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Culvert is a structure, usually of tunnel type that carries a stream or open drain under a road, railroad or any other obstruction from one side to the other side. Materials which can be used for culverts include a reinforced concrete, pipe or other material that have good performance when is embedded and surrounded by soil.
One of the first modern bridges to be made were truss bridges. They could be made of wood which some places had plethora and could withstand larger weights. They were later made of iron and steel. Many of those old modern bridges still stand.
A trestle bridge is a bridge composed of a certain number of short spans which are supported by trestle frames. A trestle frame is a platform for supporting the weight and maintaining the stability of some object. This type of bridge is also called a trestle, because of a framework of frames which define the cross-section of a timber frame building or supports a trestle.
Modern cantilever bridge is one of the safest bridge variants because it can carry largest load. Since the dawn of the modern bridge, in 19th century, they were used to carry railroads.