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Specifications Library

The Specifications Library consists of highway construction specifications and released documents that have been submitted by various transportation agencies. The library can be searched in two ways - by browsing by agency or searching by keyword.

Browse Specifications

Please choose the type of specifications you would like to see.

  • Standard Specifications and Supplements - This section is organized by agency
  • Innovative and Emerging Specifications - This section contains so called innovative and emerging specifications and reports/guidelines, and is organized by New and Emerging Technical Specifications, Alternative Contracting, and Performance Specifications. Within each category are a number of sub-categories, enabling you to narrow down the number of documents returned.

Search Specifications

Provide a search term in the Search text box below. For more concise results, select an agency and/or category.

To choose multiple agencies, hold down the Ctrl key and click on the desired agencies from the agency list.


If you have any questions or comments on the content of the National Highway Specifications web site, please contact

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The files contained on this web site are for informational and research purposes only. To obtain the official version of these documents, users are encouraged to contact or visit the web site of the issuing agency.
United States Department of Transportation - Federal Highway Administration United States Department of Transportation - Federal Highway Administration - Infrastructure