霍桑大桥

霍桑大桥英語:)是俄勒冈州波特兰市的一座跨越威拉米特河桁架升降桥,也是美国最古老的垂直升降桥[1] 和波特兰最古老的公路桥[2][1],于2012年列入國家史蹟名錄[3][4]

参考文献

  1. Wood Wortman, Sharon; Wortman, Ed. 3rd. Urban Adventure Press. 2006: 61–68. ISBN 0-9787365-1-6.
  2. . Portland Bureau of Transportation. [April 24, 2013]. (原始内容 (PDF)存档于2021-04-26).
  3. . National Park Service. November 23, 2012 [April 24, 2013]. (原始内容存档于2016-03-12).
  4. Tims, Dana. . The Oregonian. November 20, 2012 [December 9, 2014]. (原始内容存档于2018-09-08).

外部链接

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