| Abstract: | This research develops a quantitative framework to assess flood-related risks and resilience for Texas highways and bridges. The study reviewed current practices and gaps, applied GIS-based methods with statewide flood datasets, and evaluated exposure of pavements and bridges across multiple return periods and climate scenarios. Risk assessments quantified both acute and chronic flood impacts, including fragility curves and life-cycle cost projections that capture deterioration in different pavement types. Results show flooding is the most significant climate-related hazard to Texas transportation assets, with surface-treated pavements particularly vulnerable and rigid pavements more resilient. The framework provides TxDOT with scalable tools for district- and statewide prioritization, enabling identification of vulnerable assets, estimation of long-term costs, and integration of resilience into maintenance, rehabilitation, and investment strategies. By incorporating these methods into the 2026 Transportation Asset Management Plan, TxDOT can systematically embed resilience into planning, design, and decision-making processes. |
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