B-21 60 Row South- Environmental Protection Shelters (EPS) at Ellsworth Air Force Base (AFB), South Dakota (SD)
Closed Solicitation Posted
- Solicitation number
- W9128F26RA003
- Agency
-
ENDIST Omaha
US Army Corps of Engineers, Department of Defense
- Responses due
- Set-aside
- No set-aside
Opportunity facts
- NAICS code
- 236220 Commercial and Institutional Building Construction
- Place of performance
- Ellsworth Air Force Base (AFB), South Dakota (SD)
- Points of contact
Notice details come from SAM.gov. Updated .
About this opportunity
The Department of the Army Corps of Engineers Engineering District Omaha (ENDIST Omaha) is seeking proposals for the design and construction of five new pre-engineered metal Environmental Protection Shelters (EPSs) at Ellsworth Air Force Base in South Dakota. Each shelter will encompass approximately 20,000 square feet and will be sized to accommodate B-2A "Spirit" aircraft while providing space for general aircraft maintenance operations. The project scope includes associated airfield and ground support equipment (GSE) paving, as well as three maintenance kiosks of approximately 160 square feet each that will provide electrical and communication infrastructure to support the shelters. The solicitation has been subject to multiple amendments addressing revised drawings, specifications, and contractual clauses, with the final proposal due date established as March 31, 2026, at 2:00 PM Central Time. Prospective offerors should note that the most recent specification revisions were issued on March 26, 2026, and all amendments should be carefully reviewed to ensure compliance with current requirements.
This solicitation carries no set-aside designation and represents a commercial and institutional building construction project classified under NAICS 236220 and PSC code Y1BZ for construction of other airfield structures. The work will be performed at Ellsworth Air Force Base, located at 336 Main Gate Road, Box Elder, South Dakota 57719, and will require coordination with multiple concurrent B-21 construction projects at the installation. While the notice does not specify an award value or budget range, the scope of work—encompassing five large shelters, paving operations, and supporting infrastructure—represents a substantial construction contract. No incumbent contractor information is provided in the solicitation materials. Interested contractors should prepare comprehensive proposals addressing the technical and logistical challenges associated with coordinating work on an active military airfield while meeting the specified performance and construction standards.
Notice text
6 versions
Update #6 · Latest ·
Amendment 6: The purpose of this amendment is as follows: 1. Revised specs (see Summary of Changes, dated 03-26-26). All other terms and conditions remain the same.
Update #5 ·
Amendment 5: The purpose of this amendment is as follows: 1. Added Clause 52.215-1 Instruction to Offerors-Competitive Acquisition. All other terms and conditions remain the same.
Update #4 ·
Amendment 4: The purpose of this amendment is as follows: 1. Revised Drawings/Specs (see Summary of Changes, dated 03/19/26) 2. Revised 00 22 00 (see 00 22 00, dated 03/19/26) 3. The Proposal Due Date remains 03/31/26 at 2:00 PM CT.
Update #3 ·
Amendment 3:
Update #2 ·
Amendment 1- The purpose of this amendment is as follows: 1. Revised drawings/specifications (see Summary of Changes, dated 02-13-26). 2. Proposal due date is extended to 03/31/2026, 2:00 PM CST. All other terms and conditions remain unchanged.
Update #1 ·
B-21 60 Row South- Environmental Protection Shelters (EPS) at Ellsworth Air Force Base (AFB), South Dakota (SD). This project will provide five (5) new pre-engineered metal Environmental Protection Shelters (EPSs), approximately 20,000 SF each. This project is located directly adjacent to and required to coordinate with a variety of other B-21 construction projects. EPSs are sized to fit the B-2A ?Spirit? aircraft with space to perform general aircraft maintenance. The project also includes associated airfield and ground support equipment (GSE) paving. Supporting facilities include three (3) maintenance kiosks, approximately 160 SF each, providing electrical and communication infrastructure to the EPSs.
Notice history
| Notice | Type | Posted |
|---|---|---|
| This notice | Solicitation | |
| B-21 60 Row South- Environmental Protection Shelters (EPS) at Ellsworth Air Force Base (AFB), South Dakota (SD) | Pre-Solicitation |
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