Abstract
The final plan for the landmark AASHO Road Test--approaching its 50th anniversary--included 16 short-span test bridges, representing in simplified form the types commonly built on the U.S. highway system, to serve as case studies of the effect of repeated overstress. In this article, three key participants in the AASHO Road Test bridge program review the scope of the bridge studies, the methods and approaches, the findings and directions, and the lasting results.