This paper briefly considers the history, design and construction of the floating bridges across Lake Washington in the USA. With a great depth of water and a soft bottom, the concept of a floating bridge was put forward in the 1920s. The first bridge opened in 1940, the second in 1963 and the third in 1989 as traffic increased. All were constructed of prestressed concrete pontoon connected rigidly together to form a continuous structure. Details are given of the location of each bridge, its length, width and amount of traffic carried. The first bridge was subsequently rebuilt and renamed. Problems associated with floating bridges include the effect of wind and waves and opening for the passage of large vessels. Details are given of the anchoring system, construction method and costs. For the covering abstract see IRRD 873033.


  • English

Media Info

  • Features: References;
  • Pagination: p. 581-91

Subject/Index Terms

Filing Info

  • Accession Number: 00712406
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • ISBN: 90-5410-343-4
  • Files: ITRD
  • Created Date: Oct 24 1995 12:00AM