About: List of bridges in Seattle

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The city of Seattle, Washington, United States, has multiple bridges that are significant due to their function, historical status, or engineering. Bridges are needed to cross the city's waterways and hilly topography. Twelve bridges have been granted historical status by the city, federal government, or both. Seattle also has some of the only permanent floating pontoon bridges in the world.

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  • The city of Seattle, Washington, United States, has multiple bridges that are significant due to their function, historical status, or engineering. Bridges are needed to cross the city's waterways and hilly topography. Twelve bridges have been granted historical status by the city, federal government, or both. Seattle also has some of the only permanent floating pontoon bridges in the world. Original crossings over Seattle's mudflats were typically supported by timber piles. Lake Washington and Puget Sound are to the east and west of the city, respectively. They connect via a series of canals and Lake Union that are collectively known as the Lake Washington Ship Canal. The four double-leaf bascule bridges crossing the Ship Canal are the oldest still used in the city, having opened between 1917 and 1930. The easternmost—the Montlake and University bridges—connect neighborhoods south of the canal to the University District. The Fremont Bridge crosses the center of the canal and is one of the most often raised drawbridges in the world due to its clearance over the water of only 30 feet (9.1 m). The westernmost crossing of the ship canal is the Ballard Bridge. Floating bridges carry Interstate 90 and State Route 520 across Lake Washington to the Eastside suburbs. The SR 520 Albert D. Rosellini Evergreen Point Floating Bridge, which opened in 2016 as the replacement for another floating bridge at the same site, is the longest floating bridge in the world. The Lacey V. Murrow Memorial Bridge had previously been replaced after the original span sunk in 1990 when water filled an open maintenance hatch during refurbishing. Age and the 2001 Nisqually earthquake have damaged the several other spans. The risk of future earthquakes has increased the need to replace already deteriorated bridges in the city, such as the Alaskan Way Viaduct (removal began in January 2019) and the Magnolia Bridge. West Seattle is on a peninsula separated from downtown by the Duwamish River. The West Seattle Bridge is the primary roadway crossing the river. The neighborhood's Spokane Street Bridge is the world's first and only hydraulically operated concrete double-leaf swing bridge. (en)
  • 西雅圖市内有多座桥梁，需要穿越城市内的多条水道和衆多的山丘，其中不乏有在功能或工程上的创新性而拥有一定的历史意义的橋樑。截至2015年，西雅圖市内已經有十二座橋樑被联邦政府、市政府或兩者授予历史地位。西雅图市内也有一些全世界僅有的永久浮橋。 华盛顿湖和普吉特海湾分別位於西雅圖市的东部和西部，而兩者之间是通過一系列的运河和（统称为）連接的。四座通過運河的双葉上開橋是市内最古老的橋梁，它們是在1917年至1930年間啓用。市内东部邊緣，連接運河南部一帶和的橋梁有蒙特萊克大橋和大學橋。費利蒙大橋穿过运河中心，並因為其桥下净空只有9.1米（30英尺），而成為世界上最經常需要開合的橋梁。巴拉德大橋的是市内衆多跨越運河的橋樑中最靠西的一座。 一衆浮桥承載90号州际公路和520号华盛顿州州道，並跨越华盛顿湖前往。建于2016年的长青点浮桥，是的重建，是世界上最长的浮桥。在1990年因為一次整修，而使它的開放維護艙口進水，而令橋樑的其中一個跨度沉沒；之後該跨度被重建。歲月和也破坏了橋樑的其餘几个跨度。基於未来的地震的危险性增加，市内失修的橋樑也隨之需要更换，例如和。 是一个因為被杜瓦米什河分隔而與市中心分离的半岛。是跨越河流的主要通道。附近的斯波坎街大橋是世界上第一座，也是唯一一座液压操作的混凝土双葉平轉橋。 (zh)
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  • 西雅圖市内有多座桥梁，需要穿越城市内的多条水道和衆多的山丘，其中不乏有在功能或工程上的创新性而拥有一定的历史意义的橋樑。截至2015年，西雅圖市内已經有十二座橋樑被联邦政府、市政府或兩者授予历史地位。西雅图市内也有一些全世界僅有的永久浮橋。 华盛顿湖和普吉特海湾分別位於西雅圖市的东部和西部，而兩者之间是通過一系列的运河和（统称为）連接的。四座通過運河的双葉上開橋是市内最古老的橋梁，它們是在1917年至1930年間啓用。市内东部邊緣，連接運河南部一帶和的橋梁有蒙特萊克大橋和大學橋。費利蒙大橋穿过运河中心，並因為其桥下净空只有9.1米（30英尺），而成為世界上最經常需要開合的橋梁。巴拉德大橋的是市内衆多跨越運河的橋樑中最靠西的一座。 一衆浮桥承載90号州际公路和520号华盛顿州州道，並跨越华盛顿湖前往。建于2016年的长青点浮桥，是的重建，是世界上最长的浮桥。在1990年因為一次整修，而使它的開放維護艙口進水，而令橋樑的其中一個跨度沉沒；之後該跨度被重建。歲月和也破坏了橋樑的其餘几个跨度。基於未来的地震的危险性增加，市内失修的橋樑也隨之需要更换，例如和。 是一个因為被杜瓦米什河分隔而與市中心分离的半岛。是跨越河流的主要通道。附近的斯波坎街大橋是世界上第一座，也是唯一一座液压操作的混凝土双葉平轉橋。 (zh)
  • The city of Seattle, Washington, United States, has multiple bridges that are significant due to their function, historical status, or engineering. Bridges are needed to cross the city's waterways and hilly topography. Twelve bridges have been granted historical status by the city, federal government, or both. Seattle also has some of the only permanent floating pontoon bridges in the world. (en)
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  • List of bridges in Seattle (en)
  • 西雅圖橋樑列表 (zh)
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