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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 M 146-91 PDF
These definitions cover terms used in descriptions and specifications of materials occurring as or e..
AASHTO M 147-17 PDF
This specification covers the quality and grading of sand-clay mixtures; gravel, stone, or slag scre..
AASHTO M 148-05 PDF
AASHTO M 148-05 is identical to ASTM C309-03 except provisions specified in this document.
AASHTO M 152M/M 152-22 PDF
This specification covers requirements for the flow table and accessory apparatus (see Note 1) used ..
AASHTO M 153-20 PDF
AASHTO M 153-20 covers preformed expansion joint fillers of the following four types for use in conc..
AASHTO M 154M/M 154-12 PDF
AASHTO M 154M/M 154-12 (2020) is identical to ASTM C260-10a except provisions specified in this docu..
AASHTO M 155-87 PDF
This specification covers material for use under concrete pavement to minimize pumping of the paveme..
AASHTO M 156-13 PDF
This specification covers requirements for plants producing hot mix asphalt (HMA) or warm mix asphal..
AASHTO M 157-13 PDF
This specification covers ready-mixed concrete manufactured and delivered to a purchaser in a freshl..
AASHTO M 160M/M 160-08 PDF
AASHTO M 160M/M 160-08, Standard Specification for General Requirements for Steel Plates, Shapes, Sh..