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A swing bridge (or swing span bridge) is a movable bridge that can be rotated horizontally around a vertical axis. It has as its primary structural support a vertical locating pin and support ring, usually at or near to its center of gravity, about which the swing span (turning span) can then pivot horizontally as shown in the animated illustration to the right.
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A moveable bridge, or movable bridge, is a bridge that moves to allow passage for boats [1] or barges. [2] In American English, the term is synonymous with drawbridge , and the latter is the common term, but drawbridge can be limited to the narrower, historical definition used in some other forms of English, in which drawbridge refers to only a ...
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Infobox templates listed here should also be included in the category buildings and structures infobox templates. Templates that concern a bridge or bridges in an individual country can also be included in a subcategory of buildings and structures templates by country, such as United Kingdom buildings and structures templates.
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Text relevant to the diagram should be added to its right by continuing it immediately after the last closing brace of the template. Text for a new subject or topic should be started below the diagram by inserting the template {} after the last closing brace and then continuing with text. 2.
A bascule bridge (also referred to as a drawbridge or a lifting bridge) is a moveable bridge with a counterweight that continuously balances a span, or leaf, throughout its upward swing to provide clearance for boat traffic. It may be single- or double-leafed.