AASHTO Provisional Standards

AASHTO Provisional Standards are temporary guidelines developed by the American Association of State Highway and Transportation Officials to address immediate needs in transportation projects. They provide standardized methods, specifications, and practices for highway, bridge, and transportation infrastructure before permanent standards are established. These provisional standards help ensure safety, quality, and consistency across projects, allowing engineers and agencies to implement solutions efficiently while awaiting more comprehensive and official standards. Essentially, they serve as interim tools to maintain high standards in the planning and construction of transportation systems.