Bid guide
How to bid on the Little Mountain Testing Facility Progress-Design-Build OT for the DEPT of Defense
What the agency is buying and why it matters
The U.S. Army Corps of Engineers, Sacramento District, is seeking a single design-builder for a Progressive Design-Build Other Transaction (OT) agreement. This project involves developing a new Radiation Research Facility at Hill Air Force Base, Utah.
The facility is needed to modernize testing capabilities for the Sentinel weapon system and provide dedicated space for critical equipment, while also ensuring continuous testing for the existing Minuteman III system. This is a significant opportunity for firms specializing in design-build construction, with an estimated not-to-exceed value of $111.5 million.
Key dates and what happens at the deadline
This solicitation was published on July 28, 2026. The deadline for submissions is August 12, 2026, at 5:00 PM ET. All questions must be submitted through the ProjNet Suite Bidder Inquiry System before this deadline.
The government intends to make a single OT award. However, they reserve the right to select, not select, or continue discussions with any design-builder at any stage of the solicitation process.
Who this opportunity suits
This opportunity is suitable for experienced design-build firms. The work involves both design and pre-construction services in Phase 1, with a potential for Phase 2 final design and construction. Firms should have expertise in large-scale construction projects, particularly those involving specialized facilities like radiation research centers.
The project is classified under NAICS code 236210 (Industrial Building Construction) and PSC Y1AZ (Construction of Other Administrative and Service Buildings).
How to respond to this solicitation
To access the solicitation, you will need to view the original source on the portal. Sometimes, the first click may take you to the portal's homepage; if so, click again to go directly to the bid. You may need a free account to view all documents, though this is not always required.
All questions regarding this Program Solicitation must be submitted through the ProjNet Suite Bidder Inquiry System. The Solicitation Number is W91238-26-9-A001 and the Bidder Inquiry Key is DSK6IU-VBHJM5. Ensure you review all attachments in PIEE.
Practical tips for a competitive response
Given this is a Progressive Design-Build (PDB) Other Transaction (OT) agreement, clearly articulate your firm's experience with PDB projects and OT agreements. Highlight your ability to manage both design and pre-construction services effectively.
Emphasize your understanding of the project's specific requirements, such as modernizing testing capabilities for the Sentinel weapon system and ensuring uninterrupted operations for the Minuteman III. Provide concrete examples of similar projects your firm has successfully completed, especially those involving specialized facilities or secure environments. Pay close attention to all amendments, as they often contain crucial updates and additional requirements.
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 Defense; the original posting controls.