On-Road Structures (ORS) offer a promising alternative to traditional culvert/bridge design, with the potential to better mitigate flood impacts.  ORS use roadway embankments as dams to control flow into culverts, providing flood storage during peak flow events.  Several Iowa counties have implemented ORS in HUC12 watersheds, with anecdotal evidence indicating reduced flood impacts from recent extreme rainfall events.  This presentation will provide an overview of the project, and demonstrate the web-based information platform that was developed to guide and enhance ORS adoption in Iowa.

Discussion of Iowa Highway Research Project TR-792. Creation of a tool to help engineers locate and build on-road structures that create temporary storage of water through a watershed thus helping to mitigate damage due to flood events.