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AASHTO-American Association of State Highway and Transportation Officials
American Association of State Highway and Transportation Officials (AASHTO) Standards
The American Association of State Highway and Transportation Officials (AASHTO) is a leading organization that develops and publishes technical standards, specifications, guidelines, and industry resources for the transportation sector.
AASHTO standards cover a wide range of applications, including highway design, road construction, bridge engineering, transportation infrastructure, maintenance, public transit, railways, aviation, and water transportation.
Engineers, contractors, transportation agencies, and industry professionals rely on AASHTO publications to support infrastructure planning, design, construction, inspection, and maintenance while promoting safety, quality, and consistency across transportation projects.
At e-Standards Portal, you can explore AASHTO standards, technical specifications, and related publications to find the technical information you need for your engineering and transportation projects.
AASHTO OSOW-1-2009 PDF
AASHTO OSOW-1, A Synthesis of Safety Implications of Commercial Vehicles Oversize/Overweight (Decemb..
AASHTO PBHP-1-2008 PDF
This guide is intended to supply state highway agencies with strategies and methods for successful d..
AASHTO PCRT-1-2008 PDF
This primer is intended to provide AASHTO members with an introduction to the issue of climate chang..
AASHTO PDCM-2-2026 PDF
The AASHTO Guide to Pavement Design, Construction, and Management, Second Edition (2026), consolidat..
AASHTO PDDX-1-1998 PDF
A device-independent universal pavement deflection data exchange specification. Universal file forma..
AASHTO PH01-2-2016 PDF
Preparing the administrative record for a complex project can be a major challenge. This handbook pr..
AASHTO PH02-2-2016 PDF
This handbook provided information on responding to comments on an environmental impact statement (E..
AASHTO PH03-2-2016 PDF
Conducting National Environmental Policy Act (NEPA) studies for projects involving toll lanes and to..
AASHTO PH06-2-2016 PDF
This handbook provides recommendations for complying with Section 106 of the National Historic Prese..
AASHTO PH07-2-2016 PDF
This handbook provides recommendations on defining a project's purpose and need in accordance with t..