Research
National Cooperative Highway Research Program (NCHRP)
Some of the current design-related topics being researched under NCHRP and their status can be found here.
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Featured Publications
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AASHTO LRFD Bridge Design Specifications, 9th Edition
The AASHTO LRFD Bridge Design Specifications are intended for use in the design, evaluation, and rehabilitation of bridges. The specifications employ the Load and Resistance Factor .....
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Guide Specifications for Highway Construction, 10th Edition
These guide specifications provide guidance for developing transportation contract specifications and are the national standard for best practices in highway and road construction. This consensus-based guide .....
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Mechanistic-Empirical Pavement Design Guide: A Manual of Practice, 3rd Edition
This 2020 3rd edition includes the following revisions and updates from the previous 2015 2nd edition: new fracture mechanics-based model for reflective cracking in AC overlays over flexible, .....
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Standard Specifications for Transportation Materials and Methods of Sampling and Testing, and AASHTO Provisional Standards, 40th Edition, 2020, Single-User PDF Download
The AASHTO Materials Standards contain specifications, test methods, and provisional standards commonly used in the construction of highway facilities. The Materials Standards are updated three times .....
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A Policy on Geometric Design of Highways and Streets, 7th Edition, Single User PDF Download
A Policy on Geometric Design of Highways and Streets, 7th Edition, 2018, commonly referred to as the “Green Book,” contains the current design research and practices for .....
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AASHTOWare
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Check out the updated features on the new AASHTOWare.org website. -
AASHTOWare May 2018 Highlights
Here are the AASHTOWare May 2018 Program Highlights in time for AASHTO’s spring meeting. -
AASHTOWare Data Analytics Project Solicitation
AASHTO has released a project proposal for the development of AASHTOWare Project Data Analytics. Learn more about this new addition to the AASHTOWare Project Software Series.
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