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North Avenue Bridge : ウィキペディア英語版 | North Avenue Bridge
The North Avenue Bridge can refer to one of three bridges that has carried North Avenue (Illinois Route 64) over the North Branch of the Chicago River on the north side of Chicago, Illinois. A center-pier swing bridge built in 1877 was replaced in 1907 by a bascule bridge, allowing river traffic more room for maneuvering in and out of the North Canal, just north of Goose Island. Due to deteriorating conditions and undercapacity, the bascule bridge was torn down in 2006 to make room for a hybrid suspension/cable-stayed bridge. The suspension/cable-stayed bridge fully opened on May 23, 2008. == History == As Chicago grew into a center of industry and commerce in the late 19th century, numerous fixed-span crossings were replaced by center-pier swing bridges, the most common type of bridge that allowed pedestrians and wagons to cross the Chicago River while also periodically allowing ship traffic below. In 1877, one of these bridges was constructed just north of Goose Island.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「North Avenue Bridge」の詳細全文を読む
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