Detection and Mitigation of Subsidence and Voids on Vermont Roadways: I-89 Hartford and US 7 Manchester, Vermont

During the summer of 2007, a geophysical survey team from Applied Research Associates, Inc. evaluated two Vermont highway sites exhibiting subsidence. They performed surveys on I-89 in Hartford and on US-7 in Manchester to assess the performance of three nondestructive geophysical methods for characterizing the causes of subsidence. Using a set of performance criteria, they selected three non-invasive geophysical methods for field evaluations at the two subsidence sites. Their objectives for these field trials were to identify the causes of subsidence as well as determine the effectiveness and feasibility of employing these methods for characterizing the subsidence conditions. Subsidence at both sites is likely resulting from a combination of drainage issues and construction processes. The methods employed proved effective for characterizing subsurface conditions at the two sites, including the cone penetration test (CPT) to verify the relative soil strength conditions. Additionally, these methods may prove viable for future investigative applications such as wide area assessments and network level surveys.

• Record URL:
  • http://vtransengineering.vermont.gov/sites/aot_program_development/files/documents/materialsandresearch/completedprojects/AOT-ARARoadSubsidenceFinalRpt.pdf
• Record URL:
  • http://vtransplanning.vermont.gov/sites/aot_program_development/files/documents/materialsandresearch/completedprojects/AOT-ARARoadSubsidenceFinalRpt.pdf
• 
• Corporate Authors:

  Applied Research Associates, Incorporated

  461 Waterman Road
  South Royalton, VT  United States  05068

  Vermont Agency of Transportation

  219 North Main Street
  Barre, VT  United States  05641
• Publication Date: 2008-5

Language

• English

Media Info

• Media Type: Web
• Edition: Final Report
• Features: Figures; Photos; References; Tables;
• Pagination: 36p

Subject/Index Terms

• TRT Terms: Air voids; Cone penetrometers; Geophysical prospecting; Highways; Nondestructive tests; Subsidence (Geology)
• Uncontrolled Terms: Soil strength; Subsurface conditions
• Geographic Terms: Vermont
• Subject Areas: Geotechnology; Highways; I42: Soil Mechanics;

Filing Info

• Accession Number: 01113488
• Record Type: Publication
• Report/Paper Numbers: Report No. 2008-7
• Contract Numbers: 0984747
• Files: TRIS, STATEDOT
• Created Date: Oct 22 2008 12:12PM