US-101 Ramp Metering Equipment Repair and Replacement DDO (EA 04-4X910)

Caltrans District 4 is seeking a contractor for the US-101 Ramp Metering Equipment Repair and Replacement project (EA 04-4X910) located in Petaluma, Sonoma County. The project covers the stretch of US-101 from post mile 2.69 at Kastania Road to post mile 4.88 at westbound East Washington Street. The primary objective is to repair, replace, and reactivate outdated or missing ramp metering equipment to alleviate mainline traffic congestion and ensure the freeway operates at or near capacity, aligning with the completion of the Marin-Sonoma Narrows Phase 7B HOV lanes project and the HOV Traffic Analysis Study. The scope of work involves activities at five specific locations, including the installation and repair of loop detectors, flashing beacons, advanced warning signals, signs, and ramp metering foundations, as well as striping. The project will require the implementation of traffic control during construction and will utilize standardized Caltrans project measures. This effort is classified as exempt under PRC 21084 and 14 CCR 15301 Class (d) as it involves an existing facility with no anticipated environmental impacts. The solicitation is listed under NAICS code 811310 and was posted on December 11, 2025.