How to bid on Bonneville Lock and Dam - Navigation Lock 1 Bridge Replacement for DEPT of Defense

What the agency is buying

The U.S. Army Corps of Engineers, part of the Department of Defense, is seeking a contractor to replace the Navigation Lock 1 bridge at Bonneville Lock and Dam in Cascade Locks, Oregon. This project involves demolishing part of the existing bridge and constructing a new single-span steel girder bridge with a concrete deck, approach roads, and concrete abutments.

Key aspects of the work include maintaining vehicle access throughout construction, which may require phased work. The project also requires lead and asbestos removal, adherence to environmental and seasonal restrictions, and barge crane operations near a high-voltage power line. The new bridge will be 34 feet 4.5 inches wide, featuring two 11-foot travel lanes, two 2-foot shoulders, and a 5-foot sidewalk.

Key dates and deadlines

The solicitation was published on September 9, 2026. The deadline for submitting proposals is October 8, 2026, at 3:00 PM ET. All proposals must be submitted by this time.

An additional site visit was offered, with registration required by close of business on Wednesday, September 9, 2026. Attendees for the site visit must be U.S. citizens and possess a REAL ID or other acceptable identification.

Who this opportunity suits

This opportunity is suitable for construction firms with experience in bridge replacement, demolition, and projects involving complex site conditions such as maintaining traffic flow during construction, environmental remediation (lead and asbestos removal), and working near active infrastructure like high-voltage power lines and navigation channels. Firms with expertise in steel girder bridge construction and concrete abutments will find this relevant.

The project's location in Cascade Locks, Oregon, and the specific requirements for working around the Bonneville Lock and Dam suggest that contractors familiar with federal projects and the Pacific Northwest region may be well-suited.

How to respond

To access the solicitation documents, click the “View original source” link. If the first click takes you to the portal’s homepage, click the link again to go directly to the bid. You may need to create a free account on the portal to view all documents, though this is not always necessary for every bid.

Review all amendments, especially Amendment W9127N26BA0240002, which extended the deadline and provided details for the site visit, and Amendment W9127N26BA0240001, which included the “Power Line Layout” as Government Furnished Information. Pay close attention to the Solicitation Specifications, Section 00 21 13 – Instruction to Bidders, and Section 00 21 00 – Instructions for complete submission requirements.

Tips for a competitive response

Carefully review all sections of the solicitation, including any attachments and amendments, to ensure full understanding of the scope and requirements. Pay particular attention to the phased construction requirements for maintaining vehicle access and the specific environmental controls, including archaeological monitoring.

Address how your firm plans to manage the challenges of lead and asbestos removal, working within environmental and seasonal restrictions, and performing barge crane operations near a high-voltage power line. Provide a clear plan for site verification of provided information, acknowledging that the solicitation plan set takes precedence over Government Furnished Information if discrepancies exist.

Highlight your firm's experience with similar bridge replacement projects, especially those involving active infrastructure and complex logistical challenges. Detail your safety protocols for working in proximity to high-voltage lines and your approach to environmental compliance.