PROTECTING BRIDGES FROM FLOODS

In Arizona, state and local officials credit recent changes in bridge design for the preservation of some bridges, all 17 major bridges in greater Phoenix, during a recent flood. The design of bridge foundations and the stabilization of the banks of washes helped the bridges to withstand the flood. After severe storms in 1979, Arizona began replacing flood-prone bridges with ones designed to withstand 210,000 cfs. The Arizona Department of Transportation installs drilled concrete shafts with diameters of 6 to 10 ft for lateral stability and for resisting 20 to 30 ft of scouring. Approaches are protected by placing roller-compacted soil cement on river banks, or by using rock-filled wire-basket gabions that only fail locally, if at all. These and other measures against flood damage are noted.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/08919526
• Corporate Authors:

  McGraw-Hill, Incorporated

  330 West 42nd Street
  New York, NY  United States  10036
• Authors:
  • Rosenbaum, D B
• Publication Date: 1993-2-22

Language

• English

Media Info

• Pagination: p. 38
• Serial:
  • ENR
  • Volume: 230
  • Issue Number: 8
  • Publisher: McGraw-Hill, Incorporated
  • ISSN: 0891-9526

Subject/Index Terms

• TRT Terms: Bridge approaches; Bridge design; Bridge foundations; Bridges; Floods; Loss and damage; Scour; Structural design
• Subject Areas: Bridges and other structures; Design; Highways; Hydraulics and Hydrology; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00627471
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 10 1993 12:00AM