Site work for a bridge / tunnel in Portland, Oregon. Completed plans call for site work for a one-story above grade bridge / tunnel.

Construct a new 12-foot diameter culvert under roadway, replacing two failed culverts previously backfilled and paved over. Bidders must attend a mandatory pre-bid meeting by videoconference for their bid to be accepted and considered responsive. All bid documents, contract terms, specifications, plans, and the project manual are available on the Buyer Attachments page. All questions or requests for clarification must be submitted through the Q&A Board of the Sourcing Event before the deadline. All bids must be submitted through the sourcing event; paper bids are not accepted for this project. For questions regarding this Invitation to Bid or for technical assistance regarding electronic submission, submit all questions to the Sourcing Event Questions and Answers Board (Q&A Board). If you are unable to access the Q&A Board, you may contact the Procurement Analyst list below: Lynn Bybee Multnomah County Purchasing (503) 988-7544 E-Mail Address:Lynn.Bybee@multco.us Deadline to submit Questions and/or Substitution Requests is extended to Saturday, December 6, 2025 at 2:00PM Deadline to initiate Good Faith Effort outreach is extended to Tuesday, December 9, 2025 The last day the County will post an Amendment or Addendum, or post answers to any questions is extended to Wednesday, December 11, 2025 The Engineers Estimate for this project is $2,400,000 to $2,600,000 *The value for this project is based on a financial range. The value is listed as the highest possible cost from the range provided by a stakeholder or official project document.