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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 31M/M 31-22 PDF
This specification covers deformed and plain carbon and low-alloy steel concrete reinforcement bars ..
AASHTO M 320-23 PDF
This specification covers asphalt binders graded by performance. Grading designations are related to..
AASHTO M 321-04 PDF
This specification covers high-reactivity pozzolans for use as a mineral admixture in portland cemen..
AASHTO M 322M/M 322-22 PDF
This specification covers rail-steel and axle-steel bars for concrete reinforcement. Three types of ..
AASHTO M 323-22 PDF
This specification for Superpave volumetric mix design uses aggregate and mixture properties to prod..
AASHTO M 324-12 PDF
The AASHTO equivalent of the specification has been discontinued and is no longer available. Please ..
AASHTO M 325-08 PDF
This specification covers the design of stone matrix asphalt (SMA) using the Superpave gyratory comp..
AASHTO M 326-18 PDF
This specification covers the requirements and methods of tests for outside diameter dimension contr..
AASHTO M 327-23 PDF
This specification pertains to the criteria and tests to be used for determining whether an organic ..
AASHTO M 328-14 PDF
The objective of this specification is to define the required attributes of an inertial profiler, wh..