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All projects that have not passed the DAP phase gate shall use the most recent edition of the GDM.
Prior Version of the GDM Manual
Template for Revision to Geotechnical Design Manual
Programmatic Biological Opinion for Drilling, 2004
FHWA Checklist and Guidelines for Review of Geotechnical Reports and Preliminary Plans and Specifications, 2003
ODOT Research Report "FHWA Assessment and Mitigation of Liquefaction Hazards to Bridge Approach Embankments in Oregon," SPR 361, 2002
NCHRP Comprehensive Specification for the Seismic Design of Bridges Report 472, 2002
OSU Report to ODOT "Recommended Guidelines for Liquefaction Evaluations using Ground Motions from Probabilistic Seismic Hazard Analysis, 2005
FHWA Geotechnical Engineering Circulars
AASHTO LRFD Bridge Design Specifications
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