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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 PH09-1-2008 PDF
AASHTO PH09-1, Practitioner's Handbook: Using the SAFETEA-LU Environmental Review Process, was prepa..
AASHTO PH10-1-2008 PDF
Section 6001 of SAFETEA-LU requires increased consideration of environmental issues in the planning ..
AASHTO PH11-1-2009 PDF
Section 4(f) was enacted in 1966 as part of the U.S. Department of Transportation (U.S. DOT) Act, wh..
AASHTO PH12-2-2016 PDF
This handbook is intended to assist practitioners in assessing indirect effects and cumulative impac..
AASHTO PH13-1-2011 PDF
The purpose of this handbook is to assist transportation agencies in developing and/or implementing ..
AASHTO PH14-2-2016 PDF
This handbook is intended to assist practitioners in applying the Section 404(b)(1) Guidelines in th..
AASHTO PH15-1-2014 PDF
This handbook focuses on preparation of environmental impact statements (EISs) and environmental ass..
AASHTO PH16-1-2016 PDF
This handbook is intended to introduce transportation practitioners to a method of integrating ecolo..
AASHTO PH17-1-2016 PDF
This Handbook provides an overview of Section 7 consultation under the Endangered Species Act (ESA) ..
AASHTO PH18-1-2017 PDF
Handbook PH18-1 is intended to assist practitioners in addressing air quality issues, including tran..