Neighborhood Traffic Calming Project

The City of Antioch, California, is soliciting bids for the Neighborhood Traffic Calming Project under solicitation number 20260709017, with bids due by 2:00 p.m. on August 25, 2026. The project involves installing speed hump systems, thermoplastic striping, and roadside signage at eight designated locations including Sunset Drive, East Tregallas Road, Wildflower Drive, Madill Street, D Street, East 19th Street, Sunset Lane, and Candlewood Way. Work scope includes cold planing pavement, removing or relocating existing utilities and landscaping, installing traffic control measures, and ensuring compliance with Caltrans Standard Specifications and the City’s Construction Details ST-05, ST-16, and ST-21. The contract requires performance within 60 days from the Notice to Proceed, with work to commence no later than ten calendar days after issuance. All work is subject to on-site inspection and final acceptance by the Engineer, who has authority to reject non-conforming materials or work and require correction at the contractor’s expense. Bidders must submit hard-copy proposals in person to the City Clerk’s Office, accompanied by bid security equal to at least 10% of the bid amount, and must provide certifications for fleet compliance, non-collusion, and qualifications. No electronic submissions are permitted, and fax is accepted only for bid withdrawals before the deadline. The contract prohibits unauthorized work, requires immediate removal of non-compliant personnel, and holds the contractor fully liable for all labor, including subcontractor actions, which are not legally recognized as separate entities. Utility coordination must be conducted via Underground Service Alert at least 48 hours prior to excavation, with no compensation for resulting delays. Insurance requirements include workers’ compensation with waiver of subrogation in favor of the City and commercial general liability coverage matching form CG 20 38 04 13. Contract payments will be processed through the City’s fiscal agent with a 5% retainage, remitted via P.O. Box 5007, Antioch, CA 94531-5007. No contract value has been determined, as pricing fields in the bid schedule remain unpopulated, and no formal contract type is specified. Technical oversight is managed by the Capital Improvements Division, with no designated COR, COTR, or PCO identified in the documentation.