infrastruktura: Bridge

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A drawbridge or draw-bridge is a type of moveable bridge typically at the entrance to a castle or tower surrounded by a moat. In some forms of English, including American English, the word drawbridge commonly refers to all types of moveable bridges, such as bascule bridges, vertical-lift bridges and swing bridges, but this article concerns the narrower historical definition where the bridge is used in a defensive structure. As used in castles or defensive structures, drawbridges provide access across defensive structures when lowered, but can quickly be raised from within to deny entry to an enemy force.

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Waterloo Bridge () is a road and foot traffic bridge crossing the River Thames in London, between Blackfriars Bridge and Hungerford Bridge and Golden Jubilee Bridges. Its name commemorates the victory of the British, Dutch and Prussians at the Battle of Waterloo in 1815. Thanks to its location at a strategic bend in the river, the bridge offers good views of Westminster, the South Bank and the London Eye to the west, and of the City of London and Canary Wharf to the east. The bridge was given Grade II* listed structure protection in 1981.

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This list of the longest arch bridge spans ranks the world's arch bridges by the length of their main span. The length of the main span is the most common way to rank bridges as it usually correlates with the engineering complexity involved in designing and constructing the bridge. If one bridge has a longer span than another it does not necessarily mean that the bridge is longer from shore to shore or from abutment to abutment. Since each bridge has its own specific characteristics, and these are large structures, the very definition of span can vary from one bridge to another. Most use the span at the axis of the arch, as if the structure had a very thin thickness, and the intersection of…

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A bridge is a structure designed to span an obstacle, such as a river or railway, allowing vehicles, pedestrians, and other loads to pass across. Most bridges consist of a flat deck, supported by beams, arches, or cables.