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The Xiao Bridge, constructed in 1470, has a free height of 7.2 meters with an arch thickness of only 20 centimeters, which is half the thickness of a typical arch. [28] It remains in use today, supporting contemporary traffic. Another noteworthy bridge from this period is the Gao-po Bridge, situated in Yongding and constructed in 1477. It has a ...
The stone bridge was constructed from limestone and sandstone in 1325, with six visible barrel arches ranging from 5.5 m (18 ft 1 in) to 8 m (26 ft 3 in) wide. [3] The section of the bridge supported by the six arches is 79 m (259 ft 2 in; 86 yd 1 ft) long. [4] Wooden stalls were built on top of the stone bridge for trading goods. [5]
Two Erie Canal lift bridges in Lockport, New York, the nearest one shown raised for canal traffic (and closed to road traffic). The pedestrian stairs allow foot traffic to cross the raised span. Initially these bridges normally remained open for canal traffic and closed on demand for the sparse road traffic of the early 20th century.
For nearly 100 nights a year, the Gov. Mario M. Cuomo Bridge is a bridge of a different color. Here's why, and how it happens.
Animation showing the operation of a drawbridge. A drawbridge or draw-bridge is a type of moveable bridge typically at the entrance to a castle or tower surrounded by a moat.In some forms of English, including American English, the word drawbridge commonly refers to all types of moveable bridges, such as bascule bridges, vertical-lift bridges and swing bridges, but this article concerns the ...
The Sturgeon Bay Bridge (known as the Michigan Street Bridge) is a historic bridge in Sturgeon Bay, Wisconsin, United States.The bridge was built in 1929 and opened July 4, 1931, with a grand parade where it was officially dedicated as a Door County Veterans Memorial which plaques at either end still reads "To honor those who gave of themselves, to their country, in times of need" as a gift by ...
Each wedge-shaped voussoir turns aside the thrust of the mass above, transferring it from stone to stone to the springer's bottom face , which is horizontal and passes the thrust on to the supports. Voussoir arches distribute weight efficiently, and take maximum advantage of the compressive strength of stone, as in an arch bridge.
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