Illinois Department of Transportation, Erica Borggren, Acting Secretary
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ILLINOIS DEPARTMENT OF TRANSPORTATION
Geotechnical Documents, Manuals and Procedures

Geotechnical Subscription Service
The department is now offering an electronic e-mail subscription service for notifying interested persons of updated Geotechnical related items. This free service makes it easy to stay informed.

All Geotechnical Manual User Memos (AGMU)
AGMU Memos are directives from the BBS Foundations and Geotechnical Unit advising of policy changes prior to the policy's incorporation in the Geotechnical or Sub Grade Stability manuals (PDF format)

Geotechnical Forms
Download our latest forms in MS Word format.

Geotechnical Manual (PDF format)
The latest version of this manual can be downloaded from the above link. The AGMU Memos contain the most current information which supersedes the corresponding information in this manual.

Bridges and Structures
Documents, Manuals and Procedures

Subgrade Stability Manual (PDF Format)
The latest version of this manual can be downloaded from the above link. The AGMU Memos contain the most current information which supersedes the corresponding information in this manual.
Geotechnical Improvement Suggestion Box
 Help continually improve our geotechnical program by sending your suggestions for change pertaining to our policies, manuals, training, specifications, and website to the IDOT BBS Foundations and Geotechnical Unit.
Geotechnical Training Courses and Class Reference Guides
Provides list of training courses, descriptions, schedules/locations, and registration information.  The class reference guide provided at each class is also available for download in PDF format.
Geotechnical Special Provisions
Geotechnical Special Provisions are provided for download in MS Word format to ensure uniformity in contractor various geotechnical construction activities and allows for its continual improvement.
Geotechnical Design and Construction Spreadsheets
Provides various Excel spreadsheets which can be downloaded to assist in SGR writing, Foundation design, and Construction Inspections.
 IDOT Geotechnical Engineering Organizational Chart
This chart provides the central and district geotechnical engineers throughout the department, with their locations and contact phone number.
 
Geotechnical Design Guides
Detailed Step by Step Procedures are provided to document the equations and proper use of the Geotechnical Spread Sheets.

 

 

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