Infrastructure Disruption As a Social Determinant of Mental Health: The Moderating Role of Disaster Resilience during Winter Storm Uri

Background and Purpose

The February 2021 North American Winter Storm (Winter Storm Uri) caused a catastrophic failure of critical infrastructure, yet the specific pathways through which these technical collapses impact psychological well-being remain under-quantified. Grounded in the Social Determinants of Health (SDOH) framework, this study conceptualizes infrastructure not merely as a technical utility but as a fundamental environmental determinant of health. The research objectives were to: (1) determine the extent to which specific infrastructure failures (e.g., power outages, pipe bursts) predict acute mental health distress; and (2) examine whether disaster resilience acts as a moderator to buffer the impact of environmental failures on resident anxiety and life satisfaction.

Methods

A purposive sample of 390 Texas residents who experienced Winter Storm Uri completed a comprehensive survey between May and June 2024. The study utilized a unique methodology integrating quantitative psychometric scales with lexicon-based text mining. Qualitative narratives of the storm were quantitized into binary indicators (e.g., power outages, pipe bursts) using a rule-based Natural Language Processing (NLP) approach. Validated scales included the GAD-7 for anxiety, the Satisfaction with Life Scale, and the 43-item Disaster Adaptation and Resilience Scale (DARS). Ordinary Least Squares (OLS) regression and moderation analyses were performed to isolate the impact of infrastructure disruptions while controlling for sociodemographic factors, community trust, and risk perception.

Results

Regression models revealed a distinct hierarchy of impact for different stressors. Infrastructure disruption was a significant negative predictor of life satisfaction (B = -0.414, p < .05), while income loss emerged as the most potent driver of acute anxiety (B = 0.868, p < .001). Community trust was identified as the strongest positive predictor of well-being (B = 0.413, p < .001). Crucially, moderation analysis confirmed a "buffering effect" for disaster resilience. For the anxiety model, the inclusion of the interaction term (Disruption X Resilience) was statistically significant (B = -0.017, p = .033), indicating that higher levels of resilience effectively attenuated the link between utility failure and psychological distress. In contrast, resilience served as a direct promoter of life satisfaction regardless of disaster severity.

Conclusions and Implications

These findings suggest that resilience operates through a dual-path mechanism: acting as a "psychological shield" against acute anxiety and a baseline promoter of life satisfaction. The results highlight that the "soft infrastructure" of community trust and individual adaptive capacity is as vital as the physical power grid for maintaining ontological security. Practically, this study argues for a paradigm shift in disaster recovery: rapid infrastructure restoration should be redefined as a frontline clinical mental health intervention. For social work practitioners, the results emphasize that financial advocacy and environmental stabilization are essential components of trauma-informed disaster response in climate-vulnerable regions.