Jan 2, 2026 · About AASHTO The American Association of State Highway and Transportation Officials – is a nonprofit, nonpartisan association representing highway and transportation …

AASHTO is a nonprofit, nonpartisan association representing highway and transportation departments in the 50 states, the District of Columbia, and Puerto Rico. It represents all …

AASHTO provides our members with smart solutions in transportation. As an AASHTO member you are invited to utilize our critical information, training, and data.

AASHTO Store offers a wide range of publications, training materials, and other resources related to transportation engineering, design, construction, maintenance, and safety.

Dec 19, 2025 · The American Association of State Highway and Transportation Officials (AASHTO) welcomes the republication in whole or in part of any original content from The …

2 days ago · AASHTO's 2024 Conference on Data Management and Analytics, Planning, and Performance-Based Management (September 16-20, 2024) St. Louis, Missouri & Sponsorship …

Through AASHTO’s extensive committee structure, officials from across the nation meet to set policy goals and develop a wide range of voluntary recommended infrastructure construction, …

AASHTO Soil Classification System Guide rst engineering classification systems. The system was developed for use in highway construction and rates soils for their suita ility for support of …

Dec 20, 2024 · Developed by the AASHTO Committee on Bridges and Structures, these specifications employ Load and Resistance Factor Design or LRFD methodology, using …

AASHTO Product Evaluation & Audit Solutions allows non-State government agencies and Associate AASHTO Members to access product evaluation and manufacturing audit data …