Web Content Viewer


Specifications for Geotechnical Explorations provide guidance and the minimum requirements for all geotechnical explorations.

Published: July 15, 2022

The purpose of the geotechnical exploration is to provide geotechnical-related surface and subsurface information necessary for the planning, design, and construction of the project.

The extent of exploration is limited to the acquisition of geotechnical data for geotechnical conditions and properties that affect the plans, designs, and construction of ODOT transportation projects, or existing ODOT transportation infrastructure and associated appurtenances. The geotechnical exploration is comprised of four primary tasks and applies to roadway, bridges, retaining walls, miscellaneous structures, and geohazards. The exploration of geohazards is limited to only those conditions warranted, which could affect ODOT transportation plans, designs, construction or existing infrastructure assets. For some projects, some of these tasks may need to be performed on a preliminary basis for planning purposes.  The four tasks are as follows:

  • Reconnaissance and Planning
  • Boring, Sampling, and Field Testing
  • Laboratory Testing
  • Geotechnical Exploration Report

Did you know you can search the full online manual using CTRL + F, just like a PDF? To search the entire manual on one page, visit the SGE Search Page.


Table of Contents

Please join the Geotechnical Engineering mailing list!

Provide your email address and hit the Submit button to receive email notifications of changes to this manual and other Geotechnical Engineering publications.

Email address: