Federal contract award
W912P521C0009
UPSTREAM APPROACH WALLS, CHICKAMAUGA LOCK, CHATTANOOGA TN.
Award details
Obligations, current value and potential value describe different measures; they are never added together.
| Field | Reported value |
|---|---|
| Agency | Department of Defense |
| Office | W072 ENDIST NASHVILLE |
| NAICS | 237990 — Other Heavy and Civil Engineering Construction |
| PSC | Z2KA — REPAIR OR ALTERATION OF DAMS |
| Parent award / vehicle | Not reported |
| Set-aside | NO SET ASIDE USED. |
| Pricing type | FIRM FIXED PRICE |
| Obligations | $81.0M |
| Current contract value | $81.0M |
| Potential contract value / ceiling | $81.0M |
| Start date | Sep 21, 2021 |
| Current end date | Jan 30, 2026 |
| Potential end date | Jan 30, 2026 |
| Latest award activity | May 27, 2026 |
| Source loaded | Sep 19, 2026 |
Funding and modification history
Showing the latest 23 of 23 loaded transactions. Negative values are deobligations.
| Date | Modification | Obligation change | Description |
|---|---|---|---|
| May 27, 2026 | PZ0009 | $2.6M | TO IMPLEMENT CHANGE CL021-2 (WATTS BAR BRIDGING) AND CL025 (DRILLED SHAFT REMEDIATION) IAW FAR 52.236-2 DIFFERING SITE CONDITIONS. CL-021-2 IS TO DEFINITIZE UCO PART 1 EXECUTED IN W912P521C0009-P00008. THE CCD DATE REMAINS UNCHANGED AT 30 JAN 2026. |
| Mar 18, 2026 | A00013 | $243.1K | A. SCOPE OF WORK CL009-2 VECP DRILLED SHAFTS UCO PART 2THE CONTRACTOR SHALL INCORPORATE THE APPROVED CHANGES TO DRAWINGS AND SPECIFICATIONS ASSOCIATED WITH AND NECESSARY TO CONSTRUCT THE DRILLED SHAFTS IN SUBMITTED VALUE ENGINEERING CHANGE PROPOSA |
| Nov 25, 2025 | A00012 | $0 | CL026 ADVERSE WEATHER #2 PURSUANT TO AUTHORITY OF FAR 52.249-10 DEFAULT (FIXED-PRICE CONSTRUCTION). CONTRACT PRICE IS UNCHANGED BY THIS MODIFICATION. CHANGE INCLUDES 60 CD TIME EXTENSION. RCD CHANGED FROM 01 DECEMBER 2025 TO 30 JANUARY 2026. |
| Sep 26, 2025 | P00008 | $600.0K | P00008 CL021-1 RFI-100 BRIDGING INTAKE LINES AT WATTS BAR (UCO) PART 1 MODIFICATION. |
| Sep 5, 2025 | A00011 | $75.0K | IMPLEMENT CHANGE CL024 PURSUANT TO FAR 52.236-2 DIFFERING SITE CONDITIONS. CONTRACT PRICE IS INCREASED BY $75,000.00 FROM $77,499,994.46 TO $77,574,994.46. THE CONTRACT COMPLETION DATE REMAINS UNCHANGED AT DECEMBER 01, 2025. |
| Aug 4, 2025 | A00010 | $74.6K | IMPLEMENT CHANGE CL020 AND CL022 PURSUANT TO FAR 52.243-CHANGES. CONTRACT PRICE IS INCREASED BY $74,634.14 FROM $77,425,360.32 TO $77,499,994.46. THE CONTRACT COMPLETION DATE REMAINS UNCHANGED AT DECEMBER 01, 2025. |
| May 7, 2025 | A00009 | $1.8K | IMPLEMENT CHANGE CL019 PURSUANT TO FAR 52.243-CHANGES. CONTRACT PRICE IS INCREASED BY $1,800.00 FROM $77,423,560.32 TO $77,425,360.32. THE CONTRACT COMPLETION DATE REMAINS UNCHANGED AT DECEMBER 01, 2025. |
| Apr 23, 2025 | P00007 | $9.5M | P00007 CL017 REDESIGN TIME IMPACT REA FOR THE PARTIAL SUSPENSION OF TECHNIQUE SHAFT WORK REDESIGN OF THE DRILLED SHAFTS, INTERMEDIATE PIERS, NOSE PIERS, AND OF THE RESTRAINER BARS. |
| Feb 3, 2025 | A00008 | $238.1K | IMPLEMENT CHANGES CL011 AND CL015 PURSUANT TO FAR 52.243-CHANGES AND CL012 PURSUANT TO FAR 52.236-2 DIFFERING SITE CONDITIONS. CONTRACT PRICE INCREASED BY $238,050.86 TO $67,951,012.21. THE CCD REMAINS UNCHANGED AT FEBRUARY 10, 2025. |
| Dec 3, 2024 | A00007 | $0 | CCD IS EXTENDED BY 60 CALENDAR DAYS FROM 12 DECEMBER 2024 TO 10 FEBRUARY 2025. CONTRACT PRICE REMAINS UNCHANGED AT $67,712,961.35. |
| Oct 28, 2024 | P00006 | $2.6M | THIS MODIFICATION IS TO DEFINITIZE UCO PART 1 EXECUTED IN W912P521C0009-P00004. IMPLEMENT CL009-2(VECP DRILLED SHAFTS) PURSUANT TO FAR 52.248-3 VALUE ENGINEERING-CONSTRUCTION CL010-2(PIER CAPS & NOSE PIERS REDESIGN) PURSUANT TO FAR 52.243-4 CHANGES. |
| Jun 27, 2024 | A00006 | $1.6K | CL013 AND CL014 ARE ENTERED INTO PURSUANT TO AUTHORITY OF FAR 52.243-4 CHANGES. TOTAL CONTRACT PRICE IS INCREASED BY $1,597.50 TO $65,152,717.11. CONTRACT COMPLETION DATE REMAINS UNCHANGED AT DECEMBER 12, 2024. |
| Nov 21, 2023 | P00005 | $0 | ADMINISTRATIVE MODIFICATION P00005 TO CORRECT CONTRACT COMPLETION DATE FOR CHICKAMAUGA LOCK UPSTREAM APPROACH WALLS CONTRACT. |
| Oct 13, 2023 | P00004 | $3.7M | CL009-1 VECP DRILLED SHAFTS IS ENTERED INTO PURSUANT TO AUTHORITY OF FAR 52.248-3 VALUE ENGINEERING - CONSTRUCTION. CL010-1 PIER CAPS AND NOSE PIERS REDESIGN IS ENTERED INTO PURSUANT TO AUTHORITY OF FAR 52.243-4 CHANGES. |
| Aug 31, 2023 | A00005 | $1.6K | CL008 PARTNERING SESSION 2023 IS ENTERED INTO PURSUANT TO AUTHORITY OF FAR 52.243-4 CHANGES. TOTAL CONTRACT PRICE IS INCREASED BY $1,572.50 FROM $61,466,402.27 TO $61,467,974.77 |
| Aug 8, 2023 | P00003 | $453.9K | PROJECT: UPSTREAM APPROACH WALLS, CHICKAMAUGA LOCK, CHATTANOOGA, TENNESSEE. IMPLEMENTS CHANGE NO. CL006 - DRILLED SHAFT REDESIGN PURSUANT TO FAR 52.243-4. |
| Mar 13, 2023 | A00004 | $0 | MODIFICATION A00004 - W912P521C0009 IMPLEMENTS CHANGE NO. CL001, MISC DRAWING AND SPEC CHANGES IS ENTERED INTO PURSUANT TO AUTHORITY OF FAR 52.243-4 CHANGES. TOTAL CONTRACT PRICE IS UNCHANGED. THE CONTRACT COMPLETION DATE IS UNCHANGED. |
| Feb 3, 2023 | A00003 | $58.8K | CL003 IS ENTERED INTO PURSUANT TO AUTHORITY OF FAR 52.243-4 INCREASE TOTAL CONTRACT BY $58,781.88. CL007 PURSUANT TO AUTHORITY OF FAR 52.249-10, EXTENDS CONTRACT COMPLETION BY 47 CALENDAR DAYS FROM 1/24/2026 TO 3/13/2024. |
| Jan 10, 2023 | P00002 | $0 | MOD P00002, CL005 PAYMENT CONSIDERATION OF OFF-SITE STORED MATERIALS IS ENTERED INTO PURSUANT TO AUTHORITY OF FAR 52.243-4 CHANGES. |
| Aug 31, 2022 | A00002 | $91.2K | CHICK LOCK UPSTREAM APPROACH WALLS, HIXSON, TN. CL004 VEQ EXPLORATORY DRILLING CLINS IS ENTERED INTO PURSUANT TO AUTHORITY OF FAR 52.211-18 TO ADJUST CLINS 201, 202, AND 206. CONTRACT PRICE IS INCREASED BY $91,185.00. NO CHANGE TO COMPLETION DATE. |
| Mar 1, 2022 | A00001 | $5.6K | CHICK LOCK UPSTREAM APPROACH WALLS, HIXSON, TN. 1. CL002 INITIAL PARTNERING SESSION 2022 IS ENTERED INTO PURSUANT TO AUTHORITY OF FAR 52.243-4 CHANGES. 2. TOTAL CONTRACT PRICE IS INCREASED BY $5,622.85 FROM $60,856,879.40 TO $60,862,502.25. |
| Nov 19, 2021 | P00001 | $0 | MODIFICATION P00001 FOR NOTICE TO PROCEED. |
| Sep 9, 2021 | 0 | $60.9M | UPSTREAM APPROACH WALLS, CHICKAMAUGA LOCK, CHATTANOOGA TN. |
Research next steps
- Check the stated set-aside against the solicitation and current certifications.
- Review the award scope and buyer evidence before making a bid/no-bid decision.