CIP 2026-04 - Colby Circle Storm Drain Improvements Project

The City of Claremont is soliciting sealed bids for the design‑build improvement of storm‑drain infrastructure along Colby Circle and adjoining Oxford Avenue. The scope includes installing reinforced‑concrete or high‑performance polypropylene pipe (18‑, 24‑, and 36‑inch), constructing manholes and transition structures, performing curb‑opening catch‑basin and pavement work, and completing all required environmental, traffic‑control, and prevailing‑wage compliance. Bidders must self‑perform at least 50 % of the work, hold a Class A contractor license, be registered with the California DIR, and provide a 10 % bid bond plus 100 % performance/payment bonds. The contract is expected to be awarded in late October, with construction to begin within 10 working days of the Notice to Proceed and to be completed within 60 working days.