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Shear wave velocity profiles at 16 bridge sites in Northeast Arkansas (NEA) were determined using a hybrid,
non-invasive technique. These profiles were used to evaluate the liquefaction resistance at the selected sites using the
simplified procedure by Seed and Idriss (Vs approach). The liquefaction resistance was also evaluated using the Standard
Penetration Test (SPT approach) results from the geotechnical investigations at these sites that were conducted by the
Arkansas State Highway and Transportation Department (AHTD). The Liquefaction Potential Index (LPI), as introduced
by Iwasaki, was used to evaluate the severity of liquefaction. The results of both approaches were then compared.
Recommendations were made to AHTD personnel for liquefaction evaluation of future bridge projects based on the
results of this research.