In 2008, the FHWA, AASHTO, and the highway preservation industries, documented a study delineating the most critical knowledge gaps in pavement and bridge preservation and the research necessary to fill those gaps. This Research Roadmap database identifies and documents completed and ongoing R&D projects in the area of bridge and pavement preservation. It will allow researchers and practitioners to (a) share research findings across the nation, (b) avoid duplicate efforts, (c) integrate separate research studies to address an overall research gap, and (d) build on the existing knowledge base.