4 days ago · The American Association of State Highway and Transportation Officials – is a nonprofit, nonpartisan association representing highway and transportation departments in the 50 states, the …

The AASHTO Online Store. AASHTO technical standards, design and construction specifications and guides for the construction, design, and maintenance of transportation infrastructure.

The AASHTO Accreditation Program formally recognized the competence of over 1,800 testing laboratories to perform specific tests on construction materials, enhancing customer confidence.

Aug 6, 2025 · American Association of Highway and Transportation Officials (AASHTO) is a nonprofit association that represents highway and transportation departments across the nation and serves as …

The American Association of State Highway and Transportation Officials (AASHTO) is a standards setting body which publishes specifications, test protocols, and guidelines that are used in highway …

The American Association of State Highway and Transportation Officials (AASHTO) is a standards setting body which publishes specifications, test protocols, and guidelines that are used in highway …

Webinar Series on Exploring Predictive Network Screening and Evaluation Tools. This webinar series features innovative software tools and case studies for predictive network screening and safety …

The AASHTO Annual Meeting, one of the transportation industry’s most important conferences of the year, brings together experts from the public and private sectors to share the latest in industry policy …

The AASHTO Soil Classification System was developed by the American Association of State Highway and Transportation Officials, and is used as a guide for the classification of soils and soil-aggregate …

Oct 1, 2019 · The AASHTO Soil Classification System classifies soils into seven primary groups, named A-1 through A-7, based on their relative expected quality for road embankments, sub-grades, sub …