A new paper introduces a comprehensive approach to evaluate the effects of earthquakes on transportation systems, focusing on bridge fragility, traffic disruptions, and economic losses. By integrating image-based bridge fragility models with regional-scale traffic simulations, the method provides a fine-grained analysis of transportation system resilience. Utilizing data from OpenStreetMap and Google Street View, the framework constructs nonlinear bridge models and fragility functions to predict traffic impacts, including delays and detours. A case study of the Port of Los Angeles highlights the importance of timely bridge repairs, revealing that delays can significantly increase economic costs, emphasizing the need for proactive planning in critical infrastructure.
Figure 1. Overall and Port of LA travel demand data
A granular framework for modeling the capacity loss and recovery of regional transportation networks under seismic hazards: A case study on the Port of Los Angeles
Michael Benedict Virtucio, Barbaros Cetiner, Bingyu Zhao, Kenichi Soga, Ertugrul Taciroglu