SON-101 Guardrail Installation (EA 3X750)

Caltrans District 4 Bay Area/Oakland is forecasting the SON-101 Guardrail Installation project, identified as EA 3X750, located in Petaluma, Sonoma County. The scope of work involves installing a Midwest Guardrail System on US-101 at San Antonio Avenue from post mile R0.20 to R0.40 to protect errant drivers. The installation will include end treatment at the approach end and will connect to the existing guardrail on the south end. All construction activities will be performed within the Caltrans right of way, with staging limited to designated parking areas or areas without vegetation. The project is scheduled for construction in June 2026 and falls under NAICS code 237310. It has been granted a Notice of Exemption under Class 1(c) for existing facilities, as no environmental impacts are anticipated. The project is managed by the Caltrans District 4 Office of Maintenance Environmental, with Juliane Smith serving as the primary point of contact. All work will adhere to standardized project measures typically employed across Caltrans projects.