NCHRP Web-Only Document 432: Impacts and Performance of State DOT Resilience Efforts, from TRB's National Cooperative Highway Research Program, supplements NCHRP Research Report 1159 by providing detailed methods, tools, and case examples for evaluating transportation system resilience. The document supports state DOTs in developing performance-based approaches to assess and improve the effectiveness of resilience initiatives and investments.

State departments of transportation are increasingly prioritizing resilience to address disruptions from extreme weather, economic shifts, and population changes. NCHRP Research Report 1159: Measuring Impacts and Performance of State DOT Resilience Efforts* provides guidance on using resilience performance measures to evaluate and justify investments in transportation system resilience. Supplemental NCHRP Web-Only Document 432: Impacts and Performance of State DOT Resilience Efforts provides additional resources for state DOTs in developing performance-based approaches to assess and improve the effectiveness of resilience initiatives and investments.

This guide from TRB’s National Cooperative Highway Research Program offers strategies for state DOTs and partner agencies to build and sustain a strong risk management culture. It emphasizes preparing for evolving challenges—from infrastructure failures to supply chain disruptions—using the Key Bridge collapse in Baltimore as a recent example.