# B-21 Alert Facility, Ellsworth Air Force Base (AFB), South Dakota (SD)

Canonical: https://abierto.us/opportunities/w9128f26ra005

- Solicitation number: W9128F26RA005
- Notice type: Solicitation (first published as presolicitation)
- Status: Closed. Deadline was May 15, 2026 at 3:00 PM EDT
- Department: Department of the Army
- Agency: Department of the Army
- Contracting office: W071 Endist Omaha (W9128F)
- NAICS: 236220 Commercial and Institutional Building Construction
- Product or service code: Y1BZ Construction Of Other Airfield Structures
- First posted: September 19, 2025
- Last posted: May 11, 2026
- SAM.gov: https://sam.gov/workspace/contract/opp/d57f8061e0904a15bf2edf354f65d7c0/view

## Description

**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.

## Publications

- September 19, 2025: Presolicitation, due October 10, 2025 at 1:00 PM EDT. Notice f484e751dfed42e498eb150f7a3d37de. https://sam.gov/workspace/contract/opp/f484e751dfed42e498eb150f7a3d37de/view
- March 20, 2026: Solicitation, due May 4, 2026 at 3:00 PM EDT. Notice aa4ecbf7b5914930bdd1a2c896be9a8a. https://sam.gov/workspace/contract/opp/aa4ecbf7b5914930bdd1a2c896be9a8a/view
- March 23, 2026: Solicitation, due May 4, 2026 at 3:00 PM EDT. Notice 5b8000437fbb41888de4ab1dce0f514e. https://sam.gov/workspace/contract/opp/5b8000437fbb41888de4ab1dce0f514e/view
- April 14, 2026: Solicitation, due May 4, 2026 at 3:00 PM EDT. Notice c9ec49626bfb45eaa7f64e3daf0e2675. https://sam.gov/workspace/contract/opp/c9ec49626bfb45eaa7f64e3daf0e2675/view
- April 30, 2026: Solicitation, due May 15, 2026 at 3:00 PM EDT. Notice 89272e354a1a4a0bb0e0cbec076da201. https://sam.gov/workspace/contract/opp/89272e354a1a4a0bb0e0cbec076da201/view
- May 6, 2026: Solicitation, due May 15, 2026 at 3:00 PM EDT. Notice 9710ad68fa864e0699a0820a269bd69b. https://sam.gov/workspace/contract/opp/9710ad68fa864e0699a0820a269bd69b/view
- May 11, 2026: Solicitation, due May 15, 2026 at 3:00 PM EDT. Notice d57f8061e0904a15bf2edf354f65d7c0. https://sam.gov/workspace/contract/opp/d57f8061e0904a15bf2edf354f65d7c0/view

## Points of contact

- Margarette Wolfe, margarette.e.wolfe@usace.army.mil
- Brittany Gull, brittany.c.gull@usace.army.mil

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Source: SAM.gov Contract Opportunities bulk extract. Confirm deadlines on SAM.gov before responding. Cite https://abierto.us/opportunities/w9128f26ra005.