Moss Beach SR-1 Corridor Study

The County of San Mateo and the SMC Transportation Authority (TA), in cooperation with Caltrans, are initiating the Moss Beach SR-1 Congestion and Safety Improvements Project with the goal to improve traffic flow and safety in the project area. To stay aligned with the vision of Connect the Coastside, the project aims to meet the needs of drivers, cyclists, pedestrians, and transit riders, while preserving the character of the coastal community of Moss Beach.
Visit the County project webpage to learn more and to sign up for email updates.

Project Initiation (9/2022 - 11/2023) is the first and current phase of this project, which is required by Caltrans to move forward with the Moss Beach Highway 1 recommendations identified in Connect the Coastside. During this phase, the project team will establish the purpose and need for the project, study challenges within the project area, identify possible solutions, and estimate the resources needed to complete improvements. Findings from the study are summarized in a Project Initiation Document (PID) and submitted to Caltrans for consideration. A Caltrans-approved PID is required for any major work on the State Highway System and allows the project to be eligible for additional funding.

Project timeline (see County project webpage for more info)
Project Initiation (current phase)
Environmental Studies and Project Approval
Project Design and Right-of-Way
Construction

Project documents (reverse chronological order):
2023 Oct 11: Phase 1 results presentation to MCC
2023 Aug 23: Phase 2 grant application MCC letter of support
2022 Nov 30: Phase 1 overview presentation to MCC
2021 Dec 2: TA approves grant application (table of projects)
2021 Nov 9: Board of Supervisors supports grant application (staff report, map)
2021 Sep 22: Phase 1 grant application presentation to MCC & MCC letter in support

See related: Roundabouts page

See also, archived page for SR-1 Congestion & Safety Improvement Project 2012-2019,
aka Midcoast Crossings, Raised Medians, & Turn Lanes, which was the first project planning effort to come out of the Hwy 1 Safety & Mobility Studies, but which did not result in any built projects.