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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 bridge features two A-Frame masts, which support the bridge from the west bank. The masts are positioned on a shared foundation and anchored at ground level by two 4 + 3 ⁄ 4-inch (120 mm) diameter cables that are connected the tips of the masts. The forward mast is 262 feet (80 m) long and the back mast is 226 feet (69 m) long.
The moving bridge had two bascule leaves, each 48 feet (15 m) long that were connected by a 69 feet (21 m) long deck-girder approach, for a total overall length of 372 feet (113 m). [6] The girders were 40 feet (12 m) in width; which were wider than the 37.5 feet (11.4 m) bascules. [6]
The tunnel is 76 feet (23 m) wide, 58 feet (18 m) high, and 540 feet (160 m) long. [15] It is the largest diameter transportation bore tunnel in the world. [ 22 ] The large amount of material that was excavated in boring the tunnel was used for a portion of the landfill over the shoals lying adjacent to Yerba Buena Island to its north, a ...
Longer bridges can reduce the width of both shoulders to 4 feet (1.2 m). Existing bridges can remain part of the Interstate system if they have at least 12-foot-wide (3.7 m) lanes with 3.5-foot (1.1 m) shoulder on the left and a 10-foot (3.0 m) shoulder on the right, except that longer bridges can have 3.5 feet (1.1 m) shoulders on both sides.
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
The bridge is a combined road and railway vertical-lift bridge. It carries a 24-foot (7.3m) wide two-lane road, a 6-foot (1.8m) wide footpath and a single-track electrified railway line. Although the railway operates by electrified third rail, there is no electrification over the moving section of the bridge. To cross the bridge, electric ...
The center span between the two suspension towers is 1,380 feet (421 m) long, [16] [17] and the side spans between the suspension towers and the anchorages are each 700 feet (213 m) long. [16] The total length of the bridge is 2,780 feet (847 m), and the deck is 98 feet (30 m) wide. [16]