HM-4 TMS Detection Technology Replacement, EA 03-4G200

The California Department of Transportation District 3 is implementing the HM-4 TMS Detection Technology Replacement project, identified as EA 03-4G200, to modernize ramp-metering and Traffic Management System elements across various state routes in Sacramento and Placer counties. The scope of work involves the rehabilitation, replacement, or relocation of existing equipment to ensure reliable operation of detection systems. Key technical activities include conduit trenching and cleaning, replacing electrical conductors and detection loops, and installing new Cast-in-Drilled-Hole pile foundations and poles. These poles will be equipped with Microwave Radar Systems, Microwave Vehicle Detection Systems, and flashing beacons, with new guardrails installed at light pole locations as required. Construction is anticipated to begin on May 7, 2027, with an estimated duration of 50 working days. All work will be performed within Caltrans Right-of-Way. The project has been granted a CEQA Class 1 exemption and a NEPA categorical exclusion, as it involves existing facilities with negligible expansion of use and no significant environmental impacts. The contractor must adhere to strict environmental and safety standards, including 2025 Caltrans Standard Specifications for air quality and noise control. Specific requirements for hazardous waste management are mandated, including the submission of Lead Compliance Plans for aerially deposited lead and unregulated earth material containing lead, as well as providing shipping records for treated wood waste.