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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 RSDG-4-E4-2012 PDF
Errata to Roadside Design Guide, 4th Edition (2012). It records the corrections adopted by AASHTO af..
AASHTO RSDG-4-E5-2015 PDF
Errata to Roadside Design Guide, 4th Edition (2015). It records the corrections adopted by AASHTO af..
AASHTO RSDGCHP6-3-M-2006 PDF
Chapter 6 of the Roadside Design Guide, entitled Median Barriers, has been revised to include update..
AASHTO SCCA-1-1997 PDF
Historically, segregation has been measured on a subjective basis with state inspectors¿ determinati..
AASHTO SDTB-1-1986 PDF
Applies to truss bridges with spans of more than 500 feet. To be used in conjunction with Standard S..
AASHTO SHSP-2-2005 PDF
In late 1996 and early 1997, AASHTO, FHWA, NHTSA, and TRB assembled a group of national safety exper..
AASHTO SLF-5-2011 PDF
AASHTO SLF-5, Safety Leadership Forum V: Final Report (2011), documents the proceedings of the fifth..
AASHTO SLF4-1-2009 PDF
AASHTO SLF4-1, AASHTO Safety Leadership Forum IV: Final Report (September 2009), documents the fourt..
AASHTO SR-3-1997 PDF
Updated version of AASHTO's "Yellow Book" combines results of research and state-of-the-art technolo..
AASHTO SRA-3-2001 PDF
Revised guide provides an overview of components needed to establish and maintain a statewide rest-a..