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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 ...
The chain (abbreviated ch) is a unit of length equal to 66 feet (22 yards), used in both the US customary and Imperial unit systems. It is subdivided into 100 links. [1] [2] There are 10 chains in a furlong, and 80 chains in one statute mile. [2] In metric terms, it is 20.1168 m long. [2]
The largest double swing-span bridge in the United States is the 3,250 feet (990 m) long, 450 feet (140 m) navigable span, 60 feet (18 m) clearance George P. Coleman Memorial Bridge. [15] CSXT Blackwater River bridge in Milton, Florida.
It's called Peak Walk at the Glacier 3,000 Resort in the Swiss Alps, and it's the world's first suspension bridge to ever 31 inches wide. 9,800 feet up. That's a bridge
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.
Here, simple suspension bridges are made by training the roots of the Ficus elastica species of banyan tree across watercourses. [11] There are examples with a span of over 170 feet (52 m). [12] They are naturally self-renewing and self-strengthening as the component roots grow thicker and some are thought to be more than 500 years old. [13 ...
The renovators at the Massachusetts Highway Department also scored the concrete surface of the sidewalk on the bridge at 5-foot-7-inch (1.70 m) intervals instead of the conventional 6 feet (1.83 m). [22] The Lambda Zeta (MIT) chapter of Lambda Chi Alpha, which created the smoot markings, continues to repaint the markings once or twice per year ...
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