AASHTO - American Association of State Highway Transportation Officials | Building Codes & Standards

Standards, codes and references from AASHTO, the American Association of State Highway Transportation Officials, a nonprofit, nonpartisan association representing highway and transportation departments in the 50 states, the District of Columbia and Puerto Rico. AASHTO represents all five transportation modes: air, highways, public transportation, rail and water and its primary goal is to foster the development, operation and maintenance of an integrated national transportation system.