Site work and paving for a bridge / tunnel in Dayton, Washington. Design plans call for site work for a bridge / tunnel; and for paving for a bridge / tunnel.

As of February 28, 2025, this project is in the design phase. A timeline for construction has not yet been established. The COLUMBIA COUNTY solicits interest from consulting firms with expertise in Civil and Structural Engineering Design. All work will follow the Washington State Department of Transportation (WSDOT) standards and procedures for Local Agencies including in accordance with WSDOT Local Agency Guideline Manual. The Baileysburg Bridge is federally funded and must adhere to the WSDOT Local Agency Guidelines. This agreement will be for approximately twelve (12) months in duration with the option for the COLUMBIA COUNTY to extend it for additional time and money if necessary. Consultants will be considered for the following project. The contract will be a Cost-Plus Fixed Fee agreement. This project has a 13% DBE goal. The COLUMBIA COUNTY reserves the right to amend terms of this Request for Qualifications (RFQ) to circulate various addenda, or to withdraw the RFQ at any time, regardless of how much time and effort consultants have spent on their responses. Project Description Columbia County is seeking a qualified consultant to provide Preliminary Engineering Design and Alternative Analysis for the Replacement of the Baileysburg Bridge. The Alternative Analysis may include a Value Engineering component as part of the evaluation process. The existing Baileysburg Bridge consists of a 19 -ft. wide x 79-ft. long two-span timber bridge supported by steel pile foundations of unknown depth. The current proposed improvements include the complete replacement of the existing bridge and removal of the existing bridge. However, the replacement of the bridge will be based on the least cost and alternative analysis, which may involve replacing the bridge with an alternative route design that would eliminate the need for a bridge entirely. New single-span prestressed concrete bridge (28'-8" x 174') or construction of new alternative route. Alternative analysis and design. Approach roadway design. Environmental documentation and preparation of permit applications. Structural design for bridges, walls, and other structures. Determination of R/W needs and R/W plan preparation. Removal of Existing Bridge.