Montana Department of Transportation


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Reference Materials

Standard Specifications

2020 Standard and Supplemental Specifications

The 2020 Standard and Supplemental Specifications are only available in the following electronic format. Hard copies are not available.

Future Updates
Spec Book V1.3 - effective December 17, 2020
Spec Book V2.0 - effective To Be Determined


2014 Standard Specifications

2006 Standard Specifications

Specification Revisions

Comment period on draft specs closes on the last day of the month (listed).

Please send comments and proposed specification changes to:

Calculation Examples