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Use of Geophysics for Transportation Projects (2006) / Chapter Skim
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Chapter Three - Information Sources and General Responses
Pages 12-14

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From page 12...
... Approximately 12% of state DOTs, 25% of Canadian transportation agencies, and 33% of federal agencies indicated that they do not use geophysics in their programs. To maintain a relatively uniform analysis process, the agencies that do not use geophysics were not included in the remaining analysis.
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From page 13...
... As Figure 5 shows, nearly 60% of respondents indicated that the use of geophysics has been increasing in their agencies over 3 95 0 2 0 0 N=58 0 10 20 30 40 50 60 70 80 90 100 Pe rc en t Federal Agency State/Provincial Agency County Agency Municipal Agency Private Organization Toll and Turnpike Authority No Response FIGURE 2 Type of transportation agency or organization that implements geophysics on transportation projects. 3 3 68 3 23 0 10 20 30 40 50 60 70 80 90 100 Pe rc en t Primary Major Minor Occasional No Response N=59 FIGURE 3 Involvement with geophysical investigations.
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From page 14...
... The broad range of applications used during the past 5 years indicates its value to the engineering community. 21% 19% 17% 15% 10% 10% 7% 1% Data Acquisition Speed Cost Benefit Better Subsurface Characterization 2D, 3D Subsurface Assessments Other Results Presentation No Response N=162 Other 14 13 4 23 28 7 33 27 9 1 0 10 20 30 40 50 60 R es po nd en ts Cost Acquisition Issues Timeliness of Results More Questions Non-Uniqueness Results Format Lack of Understanding Lack of Confidence Other No Response N=159 28 15 4 20 21 24 11 13 0 10 20 30 40 50 60 R es po nd en ts Pavement Condition Bridge Superstructure Baseline Measurements Concrete Condition Bridge Substructure Construction QA/QC Other No Response N=136 FIGURE 6 Greatest value geophysics lends to agency transportation projects.
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