B-21 ADAL OPS/AMU 1, Ellsworth AFB, SD
Closed Solicitation Posted
- Solicitation number
- W9128F25RA076
- 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 AFB, SD Ellsworth AFB, South Dakota, United States
- Points of contact
Notice details come from SAM.gov. Updated .
About this opportunity
The U.S. Army Corps of Engineers Omaha District is procuring construction services to renovate existing building 7274 and construct an addition at Ellsworth Air Force Base, South Dakota, to support the facility's transition from a B-1 Squadron Operations/Aircraft Maintenance Unit to a B-21 Squadron Operations/Aircraft Maintenance Unit facility. The project encompasses comprehensive construction work including reinforced concrete foundations, structural steel frame with split-faced concrete masonry unit facade, standing seam metal roof, HVAC systems, fire protection, communications infrastructure, and all necessary utilities and site improvements. The solicitation has undergone multiple amendments with revisions to specifications and drawings, culminating in Amendment 6 which maintains the final proposal submission deadline of October 21, 2025, at 2:00 PM Central Time. The procurement falls under NAICS code 236220 for Commercial and Institutional Building Construction and includes requirements for complete site preparation, parking lot replacement, security enhancements, and detection/protection features. Amendment 5 introduced clause 52.236-14 and updated pricing schedules that offerors must utilize for their submissions.
This solicitation does not utilize any set-aside designations and is open to full and open competition among qualified contractors. The contract will be performed at Ellsworth Air Force Base in the Belle Fourche-Cheyenne Valleys region of South Dakota, with work involving both renovation of existing infrastructure and new construction to support the Air Force's B-21 Raider program transition. The project requires extensive coordination of multiple construction disciplines including structural, mechanical, electrical, and security systems integration to deliver a complete and fully operational squadron facility. The solicitation documents have been revised through six amendments, indicating the complexity and evolving requirements of this military construction project. No specific contract value ranges, incumbent contractor information, or detailed timeline for construction completion are provided in the available solicitation summary.
Notice text
6 versions
Update #6 · Latest ·
Amendment 6: The purpose of this amendment is as follows: 1. Revision to specifications and drawings ( see summary of changes) 2. Proposal is not extended, due date remains 21 October 2025, No later than 2:00 P.M. (CT). All other terms and conditions remain unchanged.
Update #5 ·
Amendment 5: The purpose of this amendment is as follows: 1. Revision to specifications and drawings ( see summary of changes) 2. Revision to DIV 00 21 00 (See attachment 00 21 00 Instruction to Offerors and Summary of changes) 3. Clause 52.236-14 is added. 4. Section 00 10 00 has been updated. (See attachment 00 10 00 CLIN Pricing Schedule). Offerors are to submit pricing on the attachment. 5. Proposal is extended to 21 October 2025, No later than 2:00 P.M. (CT). All other terms and conditions remain unchanged.
Update #4 ·
Amendment 4: The purpose of this amendment is as follows: 1) Revisions to specifications and drawings (see Summary of Changes), 2) Add Site Visit Roster 3) Proposal is not extended. Due date remains 07 October 2025 no later than 2:00 PM (CT), 3) All other terms and conditions remain unchanged.
Update #3 ·
Amendment 3: The purpose of this amendment is as follows: 1) Revisions to specifications and drawings (see Summary of Changes), 2) Proposal is not extended. Due date remains 07 October 2025 no later than 2:00 PM (CT), 3) All other terms and conditions remain unchanged.
Update #2 ·
Amendment 1: The purpose of this amendment is as follows: 1) Revisions to specifications and drawings (see Summary of Changes), 2) Proposal is not extended. Due date remains 07 October 2025 no later than 2:00 PM (CT), 3) All other terms and conditions remain unchanged.
Update #1 ·
B-21 ADAL OPS/AMU 1, Ellsworth Air Force Base (AFB), South Dakota (SD) Renovate existing building 7274 and construct an addition to building 7274 to support the transition of the facility from a B-1 Squadron Operations/ Aircraft Maintenance Unit facility to a B-21 Squadron Operations/ Aircraft Maintenance Unit facility. Construction includes reinforced concrete foundations and concrete floor slab, structural steel frame with split faced concrete masonry unit facade and a standing seam metal roof to match the current facilities. Project includes communication and fire protection requirements, heating, ventilation, and air conditioning systems, and all other necessary support for a complete a usable facility. The existing road and parking lot on the proposed site will be removed and replaced as needed to provide space for proper siting of the building and new parking. This project also includes all utilities, site improvements, pavements, detection/protection features, security enhancements, and other supporting work necessary to make a complete and usable facility.
Notice history
| Notice | Type | Posted |
|---|---|---|
| This notice | Solicitation | |
| B-21 ADAL Ops AMU1, Ellsworth Air Force Base (EAFB), South Dakota (SD) | Pre-Solicitation | |
| PLA Survey/Source Sought - B-21 ADAL Ops AMU1, Ellsworth Air Force Base (EAFB), South Dakota July 2025 | Pre-Solicitation |
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