B-21 Alert Facility, Ellsworth Air Force Base (AFB), South Dakota (SD)
Closed Solicitation Posted
- Solicitation number
- W9128F26RA005
- 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, South Dakota
- Points of contact
Notice details come from SAM.gov. Updated .
About this opportunity
The Department of the Army Corps of Engineers Engineering District Omaha seeks construction of a B-21 Alert Facility at Ellsworth Air Force Base, South Dakota, with proposals due May 15, 2026 at 2:00 PM CDT. No set-aside applies.
Place of performance is 336 Main Gate Road, Box Elder, South Dakota 57719. The procurement is classified under NAICS 236220, Commercial and Institutional Building Construction, and PSC Y1BZ, Construction of Other Airfield Structures. The solicitation has been amended five times since its March 20 release; the most recent amendment (Amendment 5, dated May 11) revised drawings and specifications per the Summary of Changes dated May 11, 2026. Earlier amendments removed Period of Performance dates from CLINs 0001 through 0006 (Amendment 1), added a site visit roster and updated technical documentation (Amendment 2), extended the proposal due date to May 15 (Amendment 3), and added CLIN 0016 with associated specification corrections (Amendments 4 and 5).
Notice text
6 versions
Update #6 · Latest ·
Amendment 5: The purpose of this amendment is as follows: 1. Correction to description of CLIN 0016 (see 00 10 00). 2. Revised drawings/specifications (see Summary of Changes, dated 05/11/26). All other terms and conditions remain the same.
Update #5 ·
Amendment 4: The purpose of this amendment is as follows: 1. CLIN 0016 added to 00 10 00. 2. Updated drawings/specifications (see Summary of Changes, dated 05/06/26). 3. Updated 00 21 00. All other terms and conditions remain the same.
Update #4 ·
Amendment 3: The purpose of this amendment is as follows: 1. Updated drawings/specs (see Summary of Changes dated 04/30/26). 2. CLIN 0003 updated. 3. Revised 00 22 00 (see 00 22 00 dated 04/30/26). 4. Proposal due date extended to 05/15/26 at 2:00 PM CDT. All other terms and conditions remain the same.
Update #3 ·
Amendment 2: The purpose of this amendment is as follows: 1. Added Site Visit Roster. 2. Drawing/Spec Updates (see Summary of Changes, dated 04-14-26). 3. Clause Updates. All other terms and conditions remain the same.
Update #2 ·
Amendment 1: The purpose of this amendment is as follows: 1. Remove Period of Performance Dates from Overall Contract Delivery Period CLINs 0001, 0002, 0003, 0004, 0005, 0006. All other Terms and Conditions remain the same.
Update #1 ·
Solicitation released 20 March 2026. Please see attached documents.
Notice history
| Notice | Type | Posted |
|---|---|---|
| This notice | Solicitation | |
| B-21 Alert Facility, Ellsworth Air Force Base (AFB), South Dakota (SD) | Pre-Solicitation |
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