BID Helen Putnam Kelly Creek Trail and Bridge Proj

The County of Sonoma is soliciting bids for the design‑build construction of the Helen Putnam Regional Park Kelly Creek Trail and Bridge. The project includes trail construction, a new bridge, and associated site work, with an estimated base bid cost of $380,000‑$410,000. Bidders must attend a mandatory pre‑bid conference and site walk, submit a single electronic bid via the County’s Supplier Portal, and possess a California “A” General Engineering contractor’s license. • Mandatory pre‑bid conference/site walk on September 11, 2026 (second optional session September 21, 2026) • Required submission of one electronic bid by October 6, 2026 2:00 PM PST • Contractor must hold a California “A” General Engineering license and provide qualifications for back‑country trail work • Estimated project cost $380‑$410 k; bid will be evaluated on actual proposal costs (unit price to be entered as $0.01)