October 6, 2025 -  MCOG is pleased to announce the launch of the project website for the Mendocino County Sea Level Rise Roadway Impact Study: www.MendocinoSLRstudy.org

This website will serve as the central hub for information about the study, including background on the project, timeline, upcoming engagement opportunities, and ways the public can get involved. Visitors can also sign up to receive project updates and share input with the project team.

The study will evaluate a thorough list of sites in Mendocino County that are potentially at-risk from sea level rise (SLR) and narrow them down to five key locations for focused planning analysis. These sites will be selected based on climate vulnerability, engineering feasibility, community impact, and other factors. For each of these key sites, the project team will develop and evaluate potential adaptation strategies to help ensure continued safe and reliable access for the community.

While the Study cannot address every proposed site, it will provide a critical foundation for future planning, design, and funding efforts focused on protecting Mendocino County’s coastal transportation network.

To stay informed and get involved, please visit www.MendocinoSLRstudy.org or email info@MendocinoSLRstudy.org.

July 14, 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.