HWY-1 Slope Erosion Repair DO (EA 4X500)

Caltrans District 4 is initiating a project to repair an eroded slope on Highway 1 in San Mateo County, specifically located in unincorporated Montara between post miles 36.06 and 36.12. The erosion, which affects approximately 1,100 square feet on the east side of the highway shoulder, was caused by a storm event and the failure of a drainage ditch. This damage has compromised existing trees and the structural integrity of the slope, posing a significant risk of complete slope failure that could lead to the closure of this high-traffic route and impact private residences located at the top of the slope. The scope of work includes the installation of rock slope protection to stabilize the affected section and the implementation of landscape erosion control measures to prevent future erosion. Contractors will also be required to provide traffic control during the construction period. The project has been granted a Notice of Exemption under PRC 21084 and 14 CCR 15301 Class 1(d) for existing facilities, indicating that no significant environmental impacts are anticipated. While the specific contract value and period of performance are not listed, the project is managed by the Caltrans District 4 Office of Maintenance Environmental in Oakland, California.