Culvert Materials for the NW Walker Road - 185th Ave to 173rd Ave Project (100315)

Washington County, Oregon is soliciting sealed bids through an Invitation to Bid (ITB) for the manufacture, storage, and delivery of a precast three-sided arch culvert structure for the NW Walker Road project (Project 100315), extending between 185th Avenue and 173rd Avenue. The culvert structure must measure 28 feet by 11 feet by 93.5 feet in maximum 6-foot lay-length sections and be delivered to the project site located on NW Walker Road between NW 173rd and NW 178th Avenues. Bidders must submit electronic bids through the County's e-Procurement portal at https://procurement.opengov.com/portal/washington-county-or, with questions due by April 13, 2026 at 5:00 p.m. and bids due by April 15, 2026 at 2:00 p.m. The contractor selection date is April 28, 2026, with installation scheduled between August 1 and September 30, 2026. The procurement is structured as a single lump-sum line item and includes manufacturing, engineering support, design services, storage at the manufacturing facility, and FOB delivery to the project site. Successful bidders must provide shop drawings stamped by a Professional Engineer, including design standards, material specifications, pick weights, and handling and delivery details, and must execute a contract within 15 business days of notification. The successful contractor must submit a preliminary work schedule and Contractor Safety Information Form at a pre-construction meeting before commencing work.

Bidders must verify resident status as defined under Oregon Revised Statutes 279A.120 and comply with all applicable federal, state, county, and local laws and regulations, including OSHA requirements. Bid guaranty forms and bid bonds have been waived for this project; however, successful contractors must maintain comprehensive insurance coverage including workers' compensation ($500,000/$500,000/$500,000), commercial general liability ($1,000,000 per occurrence/$2,000,000 aggregate), and automobile liability insurance ($1,000,000 combined single limit), with Washington County named as additional insured. All bids must include joint sealant materials, shims, mounting hardware, lifting inserts, and other incidentals, with pricing detailed as a single lump-sum line item. The estimated project cost ranges from $300,000 to $700,000, with a baseline estimate of $575,000 for budgeting purposes. No incumbent vendors or set-aside designations are identified in the solicitation documents. Payment terms are established at thirty days following invoice approval by the County Contract Administrator, and either party may terminate the contract for convenience with thirty days' notice.