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A suspension bridge is a type of bridge in which the deck is hung below suspension cables on vertical suspenders. The first modern examples of this type of bridge were built in the early 1800s. [5][6] Simple suspension bridges, which lack vertical suspenders, have a long history in many mountainous parts of the world.
Built in 1892, the Androscoggin Swinging Bridge has two steel A-frame towers, each 30 feet 6 inches (9.30 m) in height, mounted on concrete abutments. Wire ropes are suspended from the tower, supporting a wooden plank deck suspended from the cables by metal rods, and railings 3 feet 6 inches (1.07 m) high.
Cable-stayed cradle-system bridge. A cradle system carries the strands within the stays from the bridge deck to bridge deck, as a continuous element, eliminating anchorages in the pylons. Each epoxy-coated steel strand is carried inside the cradle in a one-inch (2.54 cm) steel tube. Each strand acts independently, allowing for removal ...
Falsework required. Usually. A self-anchored suspension bridge is a suspension bridge type in which the main cables attach to the ends of the deck, rather than directly to the ground or via large anchorages. [ 1] The design is well-suited for construction atop elevated piers, or in areas of unstable soils where anchorages would be difficult to ...
Opened. April 22, 2002. Location. The Denver Millennium Bridge is the world's first cable-stayed bridge using post-tensioned structural construction. [1] Located near LoDo (Denver's lower downtown), in Riverfront Park, it connects the 16th Street Mall with the Commons Park in the Central Platte Valley District of the Union Station neighborhood.
The original Main Street bridge was a Whipple through truss bridge built in 1890 over the Scioto River. It was lengthened in 1917 using two spans salvaged from a railroad bridge a short distance downstream of the bridge. [4] In the 1930s, it was replaced with a multiple-span, art-deco open-spandrel concrete deck arch bridge, built in 1937.
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