霍桑大桥(英语:Hawthorne Bridge)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年列入国家史迹名录[3][4]

参考文献

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  1. ^ 1.0 1.1 Wood Wortman, Sharon; Wortman, Ed. The Portland Bridge Book 3rd. Urban Adventure Press. 2006: 61–68. ISBN 0-9787365-1-6. 
  2. ^ 2011 Bicycle Counts Report. Portland Bureau of Transportation. [April 24, 2013]. (原始内容 (PDF)存档于2021-04-26). 
  3. ^ Weekly list of actions taken on properties: 11/13/12 through 11/16/12. National Park Service. November 23, 2012 [April 24, 2013]. (原始内容存档于2016-03-12). 
  4. ^ Tims, Dana. Four Multnomah County bridges listed on National Register of Historic Places. 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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