Quantifying the Role of Asset Maintenance for Resilient Infrastructure

Abstract: Asset maintenance and infrastructure resilience are directly related. However, most resilience assessments overlook pre-disaster asset condition. This study develops a probabilistic lifecycle framework integrating stochastic condition-index (CI) evolution, performance degradation, recovery modeling, and explicit maintenance strategies within a multi-hazard simulation environment. The framework quantifies how pre-event maintenance shapes resilience trajectories. Application to a representative bridge portfolio demonstrates that preventive maintenance consistently improves lifecycle performance and the Composite Resilience Performance Index (CRPI), while rehabilitation provides substantial but time-dependent recovery gains. The proposed framework offers a quantitative decision-support tool linking maintenance actions to resilience outcomes, supporting resilience-informed infrastructure planning and management.