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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.
The simple suspension bridge is the oldest known type of suspension bridge and, ignoring the possibility of pre-Columbian trans-oceanic contact, there were at least two independent inventions of the simple suspension bridge, in the wider Himalaya region and South America. [7] 18th-century rope bridge in Srinagar, Garhwal Kingdom
A contract for the substructure of the bridge was given to American Bridge Company. [6] The pin-connected drawbridge was designed by Alfred P. Boller, an authority on deep bridge foundations, to allow the bridge to pivot/swing, clearing a path for through river travel. [9] The 3 spans of the bridge are all composed of rivet-connecting steel ...
The bridge carries Highway 6 (formerly Highway 68) across a narrow channel separating Manitoulin Island from the much smaller Goat Island, forming the only land access.It consists of two 21 m (70 ft) deck plate girder approaches on the north end (Goat Island) and a single 18 m (60 ft) deck plate girder approach on the south end (Manitoulin Island), with a 112 m (368 ft) through swing bridge span.
The aqueduct is a form of swing bridge. When closed, it allows canal traffic to pass along the Bridgewater Canal. When large vessels need to pass along the ship canal underneath, the 1,450-tonne (1,430-long-ton; 1,600-short-ton) [ 3 ] and 330-foot (100 m) long iron trough [ 5 ] is rotated 90 degrees on a pivot mounted on a small purpose-built ...
A vertical-lift bridge or just lift bridge is a type of movable bridge in which a span rises vertically while remaining parallel with the deck. The vertical lift offers several benefits over other movable bridges such as the bascule and swing-span bridges. Generally speaking, they cost less to build for longer moveable spans. [1]
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The bridge is a truss bridge with an approximately 100-foot span. [7] To open the bridge for marine vessels, an electric motor drives a pinion gear which engages a ring gear in the base of the bridge. If the electric motor is not working, the bridge can also be opened manually using a large wrench (approx. 8' DEEP socket with an 8' long handle).