Bid guide
How to bid on the Sentinel Utility Corridor project at Malmstrom Air Force Base, DEPT of Defense
What the agency is buying and why it matters
The Department of Defense is seeking industry input for a Sentinel utility corridor project at Malmstrom Air Force Base in Montana. This is a significant construction opportunity, with an estimated project value between $1.4 billion and $2.0 billion. The project will use a progressive design-build approach with Other Transaction Authority.
This is an early-stage announcement, a Sources Sought notice, which means the government is gathering information and feedback from potential vendors. Participating now allows your firm to influence the project's direction and demonstrate your capabilities early in the process.
Key dates and what happens at the deadline
A virtual Industry Day was held on September 4, 2026. The slides and attendance list from this event are available as attachments.
Responses to the Sources Sought notice are due by September 24, 2026, at 3:00 PM ET. This deadline is for submitting your firm's input and information, not a final bid proposal. Missing this deadline means your firm's feedback will not be considered for this initial phase.
Who this opportunity suits
This opportunity is suitable for construction firms, particularly those with experience in large-scale infrastructure projects and a capability in design-build methods. Given the project's magnitude and the use of Other Transaction Authority, firms familiar with these acquisition processes may find this particularly relevant.
The project's category is construction, and it is located at Malmstrom Air Force Base, Montana. Firms with a presence or interest in this region and type of work should consider responding.
How to respond to this Sources Sought
To access the opportunity details and respond, you will need to view the original source on the portal. Click the “View original source” link. If the first click takes you to the portal's homepage, click it again to go directly to the bid.
You may need a free account on the portal to view all documents, though some bids allow access without one. Once you have access, review the attached Sources Sought document and complete the associated questionnaire. Additional attachments include the Progressive Design-Build (PDB) with Other Transaction Authority (OTA) Playbook and Placemat, which can help you understand the acquisition process.
Practical tips for a competitive response
When responding to a Sources Sought, focus on clearly demonstrating your firm's relevant experience and capabilities. Highlight past projects of similar scope, complexity, and value, especially those involving utility corridors or large-scale base infrastructure.
Pay close attention to any specific questions or areas of interest outlined in the Sources Sought document and the questionnaire. Tailor your responses to directly address these points. Since this uses a progressive design-build approach with Other Transaction Authority, emphasize your firm's understanding and experience with these specific contracting methods. Provide concise, factual information that showcases your firm's ability to successfully execute a project of this magnitude.
See the live bid — deadline, agency details, and how to respond
Dates and requirements can change via addenda; always verify on the bid page and at the original source before responding.
View this bid on BiddingSimpleThis guide was prepared by BiddingSimple from the solicitation’s public posting. It is not official guidance from DEPT of the Army; the original posting controls.