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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 R 43-13 PDF
This standard practice describes a method for estimating roughness for a pavement section. An Intern..
AASHTO R 44-07 PDF
Independent Assurance (IA) —Independent assurance is used in industry as an internal audit and revie..
AASHTO R 45-13 PDF
This practice provides instructions for installation, monitoring, and data reduction for the traveli..
AASHTO R 46-22 PDF
This standard practice covers the design of stone matrix asphalt (SMA) using the Superpave Gyratory ..
AASHTO R 47-23 PDF
This standard practice outlines methods for the reduction of large samples of asphalt mixture to the..
AASHTO R 49-09 PDF
This standard practice covers the determination of low-temperature properties of asphalt binders usi..
AASHTO R 5-17 PDF
AASHTO R 5-17 (2021) is identical to ASTM D 3628-08 except that all references to the ASTM standards..
AASHTO R 50-09 PDF
This standard practice provides guidance to pavement designers interested in incorporating geosynthe..
AASHTO R 51-22 PDF
This specification covers compost produced from various organic by-products for use as filter berm m..
AASHTO R 52-22 PDF
This specification covers compost produced from various organic by-products for use as a surface mul..