I-680 Loop Detectors Replacement Project (EA 3X170)

Caltrans proposes replacing inductive loop detectors at seven locations along Interstate 680 in Contra Costa County, between post miles 13.68 and 18.70, with construction scheduled to begin in September 2026. The project involves cutting pavement using trench ground saws to install new loop detectors and connecting them to existing electrical cabinets, with all work strictly confined within Caltrans’ right-of-way and equipment staged only in vegetated-free areas. Construction equipment will include asphalt concrete grinding and trenching rigs, trucks, sweepers, and hand tools. The project is categorized under CEQA Class 1(d) as an improvement to an existing facility, qualifying for a categorical exemption without requiring a full environmental impact report. No contract value, pricing structure, or award methodology has been disclosed, and no federal acquisition regulation clauses, contract type, or detailed evaluation criteria are included in the available documentation. Performance is limited to the specified corridor, with inspection and acceptance occurring on-site by Caltrans. The lead contact is Juliane Smith, Senior Environmental Scientist, and the project is administered through Caltrans District 4 in Oakland, with general correspondence directed to the agency’s main office at 111 Grand Ave, Oakland, CA 94612. There are no identified subcontracting requirements, socioeconomic set-asides, contractor certifications, or specified invoicing methods. The solicitation was posted December 2, 2025, but no submission deadline or proposal formatting instructions are provided, and no formal contract clauses or special requirements such as key personnel, security clearances, or contract options are outlined in the available materials.