Bishopville Road Arch, Nova Scotia - Reduction of Excavation for Soil Foundation Improvement

The Nova Scotia Department of Transportation and Public Works (NS TPW) called a tender in July 2007 to replace a corrugated steel tunnel (CST) crossing Highway 101 near Windsor, Nova Scotia. The new concrete arch structure was stipulated as "Design-Build", allowing the contractor to use innovative construction techniques, acceptable to NS TPW, to provide a cost effective structure replacement. This paper will describe the geotechnical analysis, approval and processes used to reduce the volume of foundation excavation for a new Bishopville Road arch tunnel. It will demonstrate the foundation improvement design did not adversely affect the structural integrity of the new structure. Survey data taken before, during and after final construction of the arch will illustrate the foundation settlement was well within design limits. The proven results of this case study show that geotechnical analysis of the "in-situ material" along with controlled construction practices can save backfill replacement costs, energy, and emissions to the environment.

• Record URL:
  http://conf.tac-atc.ca/english/resourcecentre/readingroom/conference/conf2008/english/table_of_contents.htm
• Corporate Authors:

  Transportation Association of Canada (TAC)

  401-1111 Prince of Wales Drive
  Ottawa, Ontario  Canada 
• Authors:
  • Proctor, P
  • MACDONALD, AG
• Conference:
  • 2008 Annual Conference of the Transportation Association of Canada
  • Location: Toronto , Canada
  • Date: 2008-9-21 to 2008-9-24
• Publication Date: 2008

Language

• English

Media Info

• Media Type: CD-ROM
• Pagination: 15 p.
• Monograph Title: 2008 Annual Conference and Exhibition of the Transportation Association of Canada - Transportation: A Key to a Sustainable Future

Subject/Index Terms

• TRT Terms: Bridges; Conferences; Construction; Contracts; Design; Environmental protection; Recycling; Subsoil
• Geographic Terms: Canada
• Subject Areas: Bridges and other structures; Construction; Design; Highways;

Filing Info

• Accession Number: 01117189
• Record Type: Publication
• Source Agency: Transportation Association of Canada (TAC)
• Files: TAC
• Created Date: Dec 29 2008 12:30PM