Alternative Uses for Ground Penetrating Radar (GPR) in Highway Construction and Maintenance

Ground Penetrating Radar (GPR) has long been known to be a good non-destructive method for collecting pavement data. Arkansas State Highway and Transportation Department (AHTD) is currently using GPR to evaluate pavement thickness on Arkansas highways. However, it may be possible to utilize GPR for other types of evaluations. Some of these uses include detecting and locating underground utilities, unmarked graves, and soil anomalies. AHTD's current GPR system utilizes two airborne, 2 GHz antennas. Other low frequency GPR systems may be more effective for meeting AHTD's needs. Being able to locate these items will significantly increase the productivity of design for AHTD.