Fourth Street Storm Drain, Water Main, and Street Improvements Project (SM2301)

The City of Ontario is seeking qualified contractors to design‑build and construct a comprehensive upgrade of Fourth Street, encompassing storm‑drain replacement, potable water‑main installation, and street‑level improvements. The work includes excavation, installation of reinforced‑concrete pipe (RCP) ranging from 18” to 60”, catch basins, manholes, CML&C water mains (6”–8”), fire hydrants, curb‑and‑gutter, ADA ramps, asphalt‑concrete paving, traffic control, signing, and striping. The contract is a fixed‑price, line‑item bid with a 360‑working‑day construction schedule and requires a 10 % bid bond (or cash/certified check), performance and payment bonds post‑award, and compliance with prevailing‑wage and CARB fleet regulations. • Scope covers storm‑drain pipe, water‑main pipelines, utility coordination, traffic‑control, and pavement works. • Mandatory pre‑bid meeting on June 23, 2026; electronic bid submission required by August 4, 2026. • Contractor must hold a California Class A license, provide required bonds, and maintain DIR registration and CARB compliance.