ShakeCast, Connecting the DOTs (Transportation Pooled Fund)

When an earthquake occurs, the U. S. Geological Survey (USGS) ShakeMap portrays the extent of potentially damaging shaking. In turn, the ShakeCast system, a freely-available, post-earthquake situational awareness application, automatically retrieves earthquake shaking data from USGS ShakeMap, analyzes shaking intensity data against users’ facilities (e.g., bridges, buildings, roads), sends notifications of potential impacts, and generates maps and other web-based products for emergency managers and responders. ShakeCast is particularly suitable for earthquake planning and response purposes by Departments of Transportation (DOTs). The California Department of Transportation (Caltrans) has been working with the USGS over the last ten years to develop a robust and operational ShakeCast platform. A long-term goal is to "connect the DOTs" to bring this technology to all states with seismic hazards, as the major earthquakes anticipated to occur in the future will cross state borders. The recently released ShakeCast V3 system includes a full statistical fragility analysis framework for general structural assessment of bridges as part of the near real-time system; significant improvements in the graphical user interface, including a console view for operations centers; and custom, user-defined hazard and loss modules. The new version also includes advancements in estimating the likelihood of shaking-induced secondary hazards to bridges and along roadways due to landslides and liquefaction.