July 11, 2025 - MCOG has selected Terraphase Engineering  to conduct the Mendocino County Sea Level Rise Roadway Impact Study (the Study).  Terraphase Engineering will work with a team of subject matter experts, including transportation consulting firm Alta Planning + Design, stakeholder engagement agency Craig Communications and Dr. Laura Eliza Garza Diaz of the University of California Cooperative Extension (UCCE) for Mendocino County and Lake County. Work began in May 2025.

This Study will identify five vulnerable coastal roadway sites in Mendocino County that are at risk from sea level rise (SLR), flooding, erosion and other climate-related impacts. These five priority sites will be selected from a broader list of potential sites based on factors such as climate vulnerability, engineering feasibility, community impact and other factors. For each of the selected roadway sites, the Study will develop and evaluate the feasibility of potential adaptation strategies for continued safe and reliable access for community members and emergency responders.

While not all proposed roadway sites can be addressed through this effort, the Study will lay the groundwork for future planning and funding opportunities for the selected roadway sites.

A dedicated project website with details on how you can get involved, including opportunities to help identify potential roadways for the team to analyze, will launch in summer 2025. To sign up for project updates, please email info@MendocinoSLRstudy.org.