Investigating Highway Expansions, Flooding, and Environmental Justice in California and Alabama

Research Team: Regan Patterson (lead) and Anika Tasnia

UC Campus(es): UCLA

Problem Statement: Highway expansion projects may worsen flooding and disproportionately affect disadvantaged communities, yet this issue remains largely understudied.

Project Description: This study will examine the effects of highway expansions on flooding in three communities: Oceanside and Sacramento in California, and Elba in Alabama. These locations offer a diverse investigation of highway projects at different stages, allowing for comparisons between predicted and observed impacts. The research will utilize spatial analysis, flood modeling, and environmental justice frameworks to assess changes in flooding dynamics, community loss, and network disruptions. The Climate and Economic Justice Screening Tool (CEJST) will be employed to identify disadvantaged communities in each area, while the HAZUS-MH model will predict flood impacts. To evaluate the effects of highway projects, the study will compare flooding conditions and community impacts before and after construction. The findings aim to inform highway planning practices and policies to mitigate flood risks, address environmental injustices, and promote equitable development, ensuring resilient communities and transportation systems amid climate change.

Status: In Progress

Budget: $92,165