Riverside Regional Water Quality Control Plant Headworks Overflow

The City of Riverside, Department of Public Works, is requesting lump-sum construction bids for the Riverside Regional Water Quality Control Plant Headworks Overflow project, with bids due September 11, 2026 at 12:00 p.m. (PDT). Bidders must hold either a Class "A" General Engineering or Class "C-34" Pipeline Contractor license from the State of California in good standing — the primary eligibility filter.

The scope encompasses construction of a concrete valley gutter, curb, sidewalk, asphaltic concrete berm, pavement, HDPE pipe, grated inlets, and an outlet into an existing concrete-lined basin. The overflow system is designed to operate during power outages at the Regional Water Quality Control Plant. The project is located at 5950 Acorn Street, Riverside, CA 92504.

The estimated bid value is $173,804. Bids must be submitted electronically through the PlanetBids Vendor Portal in lump-sum format. A non-mandatory pre-bid job walk is scheduled for August 25, 2026 at 9:00 a.m. Questions are due September 1, 2026 at 12:00 p.m. (PDT). A bid bond equal to ten percent of the proposal amount, executed by a corporate surety with an A:7 rating and notarized, is required prior to the submission deadline. Performance and payment bonds are each required at 100 percent of the contract amount. Proposal offers must remain valid for 120 days. Contact: Frank Grosso, City of Riverside Department of Public Works.