Moss Beach State Route 1 Project Update - Launch of Next Phase

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The County of San Mateo is pleased to share updates about the Moss Beach State Route 1 Congestion & Safety Improvements Project (also known as “Moss Beach Corridor Project”).  

The County, San Mateo County Transportation Authority (SMCTA), and Caltrans completed the first phase of the Moss Beach Corridor Project, called "project initiation." This results in a document, called the "Project Study Report-Project Development Support (PSR-PDS)," which is available on the project webpage under "Documents and Meeting Materials." Comments received during outreach are included in Attachment S of the PSR-PDS.

The project was allocated funding through the San Mateo County Transportation Authority’s Highway Program 2023 Call for Projects for the next phase, called "Project Approval and Environmental Document (PAED)." During this phase, the project team will perform preliminary design work and analyze the potential impacts of the Moss Beach Corridor Project on the environment. These studies are required by state and federal laws under the California Environmental Quality Act (CEQA) and the National Environmental Policy Act (NEPA). Subjects such as water quality, plants and animals, transportation, and more will be evaluated.

The project team anticipates holding a public meeting in fall 2025. In the interim, we will continue to keep the website up to date and send out quarterly updates through this email list. We look forward to engaging with you as the Moss Beach Corridor Project progresses. Please visit the project webpage for more information: https://www.smcgov.org/planning/moss-beach-sr-1  

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