Assessing Climate Change Vulnerabilities on California Highways

WSP USA worked closely with Caltrans to develop a study assessing climate impacts on the State Highway System and is continuing this work by prioritizing assets for further study.


The Thomas Fire in 2017 was the largest recorded wildfire in California history. Fires like this have been exacerbated by climate change and highlight uncertainties of the reliability of critical highway infrastructure.

Caltrans and WSP prepared Vulnerability Assessment reports for the 12 transportation districts that cover California.

The Vulnerability Assessment Reports include detailed graphics and maps that highlight areas where climate change poses an imminent threat to the California State Highway System.