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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 T 247-22 PDF
The method covers the compaction of test specimens of hot mix asphalt (HMA) by means of a mechanical..
AASHTO T 249-03 PDF
AASHTO T 249-03 (2020) is to be followed in ascertaining the quality of the seam of a helical lock s..
AASHTO T 24M/T 24-22 PDF
Incorporates the October 2025 and March 2026 Errata This test method covers obtaining, preparing, an..
AASHTO T 250-23 PDF
The procedures used for testing thermoplastic traffic line material are described in this method. Th..
AASHTO T 252-19 PDF
The principal reasons for measuring pore pressures in highway construction are: 1. To monitor streng..
AASHTO T 253-02 PDF
AASHTO T 253-02 (2020) methods are designed to test the qualifications of the organic coating of cor..
AASHTO T 255-22 PDF
This test method covers the determination of the percentage of evaporable moisture in a sample of ag..
AASHTO T 256-01 PDF
AASHTO T 256-01 (2020) provides standards for measuring pavement surface deflections, directly under..
AASHTO T 257-96-2017 PDF
This standard covers procedures for instrumental determinations of photometric characteristics of re..
AASHTO T 258-81 PDF
This standard covers a method to determine if a soil is expansive and methods to predict the amount ..