Fast-Track Installation of Micropiles to Resupport Settled Florida SR-60 Bridge End Bents

The end bents of an existing bridge located west of Lake Wales, Florida, experienced significant settlement, leading to concern about its stability. A detailed foundation inspection attributed the settlement to deterioration of the existing timber piles. The bridge was closed to traffic until both end bents could be remediated. An adjacent bridge handled both directions of traffic during the closure. The geotechnical contractor proposed a solution of micropiles installed through both end bents to restore the bridge’s capacity. Timing was a critical component of the remediation work. The micropile program consisted of the use of rotary drilling techniques to install 20 micropiles through the end bents to a depth of 30 ft. The tops of the micropiles were bonded to the end bent pile caps. A load test was performed on a test pile installed adjacent to the existing bridge.

• Record URL:
  https://doi.org/10.3141/2202-06
• Summary URL:
  http://scholar.google.com/scholar_lookup?title=Fast-Track+Installation+of+Micropiles+to+Resupport+Settled+Florida+SR-60+Bridge+End+Bents&author=J.+Hussin&author=C.+Cook&publication_year=2010
• Availability:
  • Find a library where document is available. Order URL: http://www.trb.org/Main/Blurbs/Bridge_Engineering_2010_Volume_3_164559.aspx
• Authors:
  • Hussin, James
  • Cook, Curtis
• Publication Date: 2010

Language

• English

Media Info

• Media Type: Print
• Features: Figures; Maps; Photos; References; Tables;
• Pagination: pp 45-49
• Monograph Title: Bridge Engineering 2010, Volume 3
• Serial:
  • Transportation Research Record: Journal of the Transportation Research Board
  • Issue Number: 2202
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Bearing capacity; Bents; Bridge foundations; Geotechnical engineering; Pile caps; Rotary drilling; Settlement (Structures); Support piles
• Uncontrolled Terms: Fast track construction; Micropiles
• Geographic Terms: Lake Wales (Florida)
• Subject Areas: Bridges and other structures; Construction; Design; Geotechnology; Highways; I24: Design of Bridges and Retaining Walls; I42: Soil Mechanics; I53: Construction of Bridges and Retaining Walls;

Filing Info

• Accession Number: 01322247
• Record Type: Publication
• ISBN: 9780309160568
• Report/Paper Numbers: 7IBEC-0067
• Files: TRIS, TRB, ATRI
• Created Date: Dec 8 2010 11:56AM