Description: Locations of historical borehole targets from ODOT projects going back to the 1920's. Update frequency: Quarterly. For more information, visit: www.dot.state.oh.us/Divisions/Engineering/Geotechnical
Copyright Text: ODOT Office of Geotechnical Engineering
Description: Locations of geotechnical-specific ODOT projects going back to the 1920's. Update frequency: Quarterly. For more information, visit: www.dot.state.oh.us/Divisions/Engineering/Geotechnical
Copyright Text: ODOT Office of Geotechnical Engineering