W912P517C0007↗

Shimmick Construction Company, Inc. received this contract from W072 Endist Nashville, Department of the Army: $65.75M obligated so far for repair or alteration of dams. Its period of performance ended 2026-07-25.

Key facts · data as of Oct 23, 2026

Recipient
Shimmick Construction Company, Inc.
Awarding agency
Department of the Army (Department of Defense)
Contracting office
W072 Endist Nashville (W912P5)
Obligated to date
$65.75M
Potential value
$312.77M
Ends
2026-07-25

Source: USAspending.gov prime award records (obligations: money committed, not outlays), data as of Oct 23, 2026.

Cite this page: SpendQuery, Award W912P517C0007, data as of Oct 23, 2026, https://spendquery.com/award?id=CONT_AWD_W912P517C0007_9700_-NONE-_-NONE-

IGF::OT::IGF CHICKAMAUGA LOCK CHAMBER - BASE CONTRACT

Definitive Contract · Department of the Army · to Shimmick Construction Company, Inc. (UEI PNF1UVJ6YE96) · data as of 2026-10-23

Obligated to date$65.75M56 actions
Current value$312.77Mwith options exercised
Period2017-09-28 → 2026-07-25current end date

What it is

Product or service
Repair or Alteration of Dams (PSC Z2KA)
Industry
Other Heavy and Civil Engineering Construction (NAICS 237990)
Contracting office
W072 Endist Nashville (W912P5)
Competition
Full and open competition · 6 offers received
Pricing
Firm fixed price
How it was bought
Standalone contract
Solicitation
W912P517B0001
Where the work is
Hamilton, TN · district TN-03

Obligations by fiscal year

FY2023$12.97M
FY2024$51.66M
FY2025-$1.80M
FY2026$2.91M

SpendQuery holds FY2023 on; earlier years are on USAspending.gov.

Subcontractors: where the money went next

No subawards reported for this award. Primes report subawards of $30,000 or more; many awards have none.

Every action

56 actions since 2022-11-04. Each is a modification or amendment with the money it added or took back.

DateModificationKindAmountWhat the agency wrote
2026-04-29P00029Administrative change-$375.0KCHICKAMAUGA LOCK CHAMBER REPLACEMENT - ADMINISTRATIVE MODIFICATION TO CORRECT FUNDED AMOUNT FOR CLIN 0523.
2026-03-25PZ0028Change order definitized$3.05MCHICKAMAUGA LOCK CHAMBER REPLACEMENT - CL254-2 MITER GATE PRODUCTION FILLET WELD SIZE INCREASE IS ENTERED INTO PURSUANT TO AUTHORITY OF FAR 52.243-4 CHANGES TO DEFINITIZE MODIFICATION P00026 (UCO PART 1).
2026-02-11A00088Supplemental agreement (work within scope)$156.7KCHICKAMAUGA LOCK CHAMBER REPLACEMENT
2026-01-29A00087Supplemental agreement (work within scope)$58.0KCHICKAMAUGA LOCK CHAMBER REPLACEMENT
2025-11-26A00086Supplemental agreement (work within scope)-$33.1KCL168-2, CL244, CL253, CL262, CL263, AND CL265 ARE ENTERED INTO PURSUANT TO AUTHORITY OF FAR 52.243-4 CHANGES. TOTAL CONTRACT PRICE IS DECREASED BY $33,146.71 FROM $309,911,296.42 TO $309,878,149.71. THE CONTRACT COMPLETION DATE SHALL REMAIN UNCHANGED BY…
2025-10-28A00085Change order$37.5KCL229-1 INJECTION CRACK REPAIR IS ENTERED INTO PURSUANT TO FAR 52.243-4 CHANGES. THE CONTRACT PRICE IS INCREASED BY $37,500 FROM $309,873,796.42 TO $309,911,296.42.
2025-10-08A00084Supplemental agreement (work within scope)$15.6KCL241 MG RECESS LIGHTING CONFIGURATION, CL246 RFI-1134 SCHEDULE 80 PVC, CL252 RFI-1163 PAINT AND RFI-1170 PINTLE BUSHING ARE ENTERING INTO PURSUANT TO FAR 52.243-4 CHANGES. THE CONTRACT PRICE IS INCREASED BY $15,648.25 FROM $309,858,148.17 TO…
2025-09-18P00027Change order-$4.30MUNILATERAL MODIFICATION. CL199-2 RFI869 LOCK CONTROL SYSTEM IS ENTERED INTO PURSUANT TO AUTHORITY OF FAR 52.243-4 CHANGES. CL223 QBM OPTION 2 UNDERRUNS, CL224 QBM OPTION 3 UNDERRUNS, AND CL225 QBM OPTIONS 4-8 MISCELLANEOUS CONCRETE UNDERRUNS ARE ENTERED INTO…
2025-08-14P00026Change order$111.9KCL154-2 RFI-768 SHEAR WALL DESCOPE VS ELECTRICAL CREDIT AND CL254-1 MITER GATE PRODUCTION FILLET WELD SIZE INCREASE (UCO PART 1) ARE ENTERED INTO PURSUANT TO AUTHORITY OF FAR 52.243-4 CHANGES.
2025-08-08A00083Change order$135.0KA00083 CL250-1 GALLERY POWER PANEL UCO PART 1 AND CL258-1 CULVERT VALVE MACHINERY GREASE LINES UCO PART 1 ARE ENTERED INTO PURSUANT TO AUTHORITY OF FAR 52.243-4 CHANGES. THE TOTAL CONTRACT PRICE IS INCREASED BY $135,000.00 FROM $313,911,834.86 TO…
2025-08-05A00082Supplemental agreement (work within scope)$271.4KMODIFICATION A00082 CL196, CL237, CL240, CL249, AND CL256 IS ENTERED INTO UNDER THE AUTHORITY OF FAR 52.243-4 CHANGES AND FAR 52.211-18 VARIATION IN ESTIMATED QUANTITIES. THE CONTRACT PRICE IS INCREASED BY $271,400.55. THERE IS NOT TIME EXTENSION…
2025-07-22A00081Change order$123.7KIMPLEMENTS UNILATERALLY CONTRACT CHANGES CL139, CL167, AND CL208-2 PURSUANT TO THE AUTHORITY OF FAR 52.243-4 CHANGES. TOTAL CONTRACT PRICE IS INCREASED BY $123,682.00. COMPLETION DATE REMAINS UNCHANGED AT JANUARY 27, 2026.
2025-06-19A00080Supplemental agreement (work within scope)$51.9KA00080 - CL095, CL175, CL188, CL202-2, CL234, AND CL239
2025-03-03A00079Supplemental agreement (work within scope)$234.5KIMPLEMENT CHANGES CL(214-2, 230, 232, 233-2, 235, 236) INTO PURSUANT TO AUTHORITY OF FAR 52.243-4 CHANGES AND 52.211-18 VEQ. TOTAL CONTRACT PRICE IS INCREASED BY $234,473.48 TO $313,464,894.38. THE CONTRACT COMPLETION DATE REMAINS UNCHANGED.
2024-12-05A00078Supplemental agreement (work within scope)$17.2KIMPLEMENT CHANGE CL186-2 INTO PURSUANT TO AUTHORITY OF FAR 52.243-4 CHANGES. TOTAL CONTRACT PRICE IS INCREASED BY $17,202.40 FROM $313,213,218.50 TO $313,230,420.90. THE CONTRACT COMPLETION DATE REMAINS UNCHANGED AT JANUARY 27, 2026.
2024-11-27A00077Supplemental agreement (work within scope)$66.7KIMPLEMENT MISC. CHANGES INTO PURSUANT TO AUTHORITY OF FAR 52.243-4 CHANGES. TOTAL CONTRACT PRICE IS INCREASED BY $66,734.84 FROM $313,146,483.66 TO $313,213,218.50. THE CONTRACT COMPLETION DATE REMAINS UNCHANGED AT JANUARY 27, 2026.
2024-11-14P00025Supplemental agreement (work within scope)$1.48MMODIFICATION TO IMPLEMENT CHANGES FOR CL231 VEQ REINFORCING STEEL AND REBAR PLACEMENT PURSUANT TO AUTHORITY OF FAR 52.211-18 VARIATION IN ESTIMATED QUANTITY.
2024-10-10A00076Change order$10.0KIMPLEMENT CL233-1 INTO PURSUANT TO AUTHORITY OF FAR 52.243-4 CHANGES. TOTAL CONTRACT PRICE IS INCREASED BY $10,000.00 FROM $311,658,104.63 TO 311,668,104.63. THE CONTRACT COMPLETION DATE REMAINS AT JANUARY 27, 2026.
2024-09-18A00075Supplemental agreement (work within scope)$236.1KIMPLEMENT MISC. CHANGES INTO PURSUANT TO AUTHORITY OF FAR 52.243-4 CHANGES AND FAR 52.211-18 VEQ. TOTAL CONTRACT PRICE IS INCREASED BY $236,053.34 FROM $311,422,051.29 TO $311,658,104.63. THE CONTRACT COMPLETION DATE REMAINS AT JANUARY 27, 2026.
2024-08-27A00074Change order$20.9KIMPLEMENT CHANGES CL(144, 219-1, 220-1) INTO PURSUANT TO AUTHORITY OF FAR 52.243-4 CHANGES. TOTAL CONTRACT PRICE IS INCREASED BY $20,924.25 FROM $311,401,127.04 TO $311,422,051.29. THE CONTRACT COMPLETION DATE REMAINS UNCHANGED AT JANUARY 27, 2026.
2024-08-15P00024Supplemental agreement (work within scope)$33.02MMODIFICATION TO INCORPORATE SETTLEMENT AGREEMENT AND ADD THE DPAS RATING DO-C2 TO THE CONTRACT FOR LONG LEAD ITEMS TO FACILITATE MEETING SCHEDULE DELIVERY.
2024-07-29P00023Supplemental agreement (work within scope)$3.27MCL135 UNSOLICITED CONCRETE PROPOSAL IS ENTERED PURSUANT TO AUTHORITY OF FAR 52.243-4 CHANGES. THE CONTRACT COMPLETION DATE REMAINS AT JANUARY 27, 2026.
2024-07-17A00073Change order$110.0KCL208-1, CL214-1 ARE ENTERED PURSUANT TO AUTHORITY OF FAR 52.243-4 CHANGES. TOTAL CONTRACT PRICE IS INCREASED BY $110,000.00 FROM $275,005,931.65 TO $275,115,931.65. THE CONTRACT COMPLETION DATE REMAINS UNCHANGED AT JANUARY 27, 2026.
2024-07-08A00072Supplemental agreement (work within scope)$174.3KIMPLEMENT CHANGES CL183, CL187, CL194-2 & CL217 INTO PURSUANT AUTHORITY OF FAR 2.243-4 CHANGES. TOTAL CONTRACT PRICE IS INCREASED BY $174,303.36 FROM $274,831,628.29 TO $275,005,931.65. CONTRACT COMPLETION DATE REMAINS UNCHANGED AT JANUARY 27, 2026.
2024-06-21A00071Supplemental agreement (work within scope)$251.1KIMPLEMENT CHANGES CL215 PURSUANT TO FAR 52.243-CHANGES. TOTAL CONTRACT PRICE IS INCREASED BY $251,053.88 FROM $274,580,574.41 TO $274,831,628.29. THE CONTRACT COMPLETION DATE REMAINS UNCHANGED AT JANUARY 27, 2026.
2024-06-17A00070Supplemental agreement (work within scope)$437.0KIMPLEMENT CHANGES CL187 & CL211 PURSUANT TO FAR 52.243-CHANGES AND CL212 PURSUANT TO FAR 52.236-2 DIFFERING SITE CONDITIONS. CONTRACT PRICE IS INCREASED BY $437,016.54 TO $274,580,574.41. CONTRACT COMPLETION DATE REMAINS UNCHANGED AT JANUARY 27, 2026.
2024-06-06A00069Supplemental agreement (work within scope)$1.7KIMPLEMENT CHANGES CL195, CL201 AND CL213 PURSUANT TO FAR 52.243-CHANGES. TOTAL CONTRACT PRICE IS INCREASED BY $1,685.83 FROM $274,141,872.04 TO $274,143,557.87. THE CONTRACT COMPLETION DATE IS REMAINS UNCHANGED AT JANUARY 27, 2026.
2024-05-22P00022Supplemental agreement (work within scope)-$1.28MIMPLEMENT CHANGES CL130 (DESCOPE OPTION 12) AND CL141 (MITER GATE GFE DRAWINGS) PURSUANT TO FAR 52.243-CHANGES. CHANGES CL123 (QMB SHOTCRETE CLOSEOUT) AND CL131 (M1 SPILLWAY DOWELS) PURSUANT TO FAR 52.211-18-VEQ.
2024-04-24A00068Change order$25.0KCL154-1 RFI-0768 IS ENTERED PURSUANT TO FAR 52.243-4 CL216 IS ENTERED PURSUANT TO FAR 52.249-10. CONTRACT PRICE IS INCREASED BY $25,000.00 TO $275,423,627.23. CONTRACT COMPLETION DATE IS EXTENDED BY TEN CALENDAR DAYS TO JANUARY 27, 2026.
2024-04-16A00067Supplemental agreement (work within scope)$355.5KIMPLEMENT CHANGES CL153, CL206 PER AUTHORITY OF 52.211-18 AND CHANGES CL179, CL197 PER AUTHORITY OF FAR 52.243-4. TOTAL CONTRACT PRICE IS INCREASED BY $355,507.67 TO $275,398,627.23. THE CONTRACT COMPLETION DATE REMAINS UNCHANGED AT JANUARY 17, 2026.
2024-04-10A00066Supplemental agreement (work within scope)$135.7KIMPLEMENT MISC. CHANGES INTO PURSUANT TO AUTHORITY OF FAR 52.243-4 CHANGES. TOTAL CONTRACT PRICE IS INCREASED BY $135,677.23 FROM $274,907,442.33 TO $275,043,119.66. THE CONTRACT COMPLETION DATE REMAINS UNCHANGED AT JANUARY 17, 2026.
2024-04-03A00065Change order$432.3KCL133 MUDMAT OVERRUNS IS ENTERED PURSUANT TO AUTHORITY OF FAR 52.211-18 VARIATION ESTIMATED IN QUANTITY CL205 COFD FLOATING MOORING BITT IS ENTERED PURSUANT TO AUTHORITY OF FAR 52.243.4 CHANGES.
2024-02-06A00064Change order$6.0KCHANGE CL202-1 IS ENTERED PURSUANT TO AUTHORITY OF FAR 52.243-4 CHANGES. TOTAL CONTRACT PRICE IS INCREASED BY $6,000.00 FROM $274,469,151.41 TO $274,475,151.41. CONTRACT COMPLETION DATE UNCHANGED.
2024-01-24A00063Change order$318.0KUNILATERALLY IMPLEMENT CONTRACT CHANGE CL180 UNDER DEFAULT CLAUSE UCO PART 1 FOR CHANGE CL199 INCREASE NTE FOR CHANGE CL141 UNDER UCO PART 3. INCREASE CONTRACT VALUE BY $318,000.00 TO $274,469,151.41. ADJUST CCD 10 CALENDAR DAYS TO 17 JAN 2024.
2024-01-05A00062Change order$10.0KIMPLEMENT PART 1 OF CONTRACT CHANGE CL194, GROUNDING UPDATES. $10K NTE SET WITH DEFINITIZATION BY 1 APRIL 2024. NO CHANGE TO COMPLETION DATE.
2023-12-19P00021Supplemental agreement (work within scope)$9.88MIMPLEMENT CHANGE CL165 REA 10 STEEL AND CONCRETE OVERRUNS PURSUANT TO FAR 52.211-18 VARIATION IN ESTIMATED QUANTITY & FAR 52.243-4 CHANGES. ADD FAR CLAUSE 52.204-27, PROHIBITION ON A BYTEDANCE COVERED APPLICATION. CONTRACT COMPLETION REMAINS THE SAME.
2023-12-07P00018Change order$3.89MIMPLEMENT CHANGE CL189 COFD CULVERT INTAKE DESIGN DELAYS PURSUANT TO FAR 52.243-4 CHANGES.
2023-11-20A00061Supplemental agreement (work within scope)$30.9KIMPLEMENT CHANGES CL152 AND CL182 PURSUANT TO FAR 2.243-CHANGES AND CHANGE CL163 PURSUANT TO FAR 52.236-2 DIFFERING SITE CONDITIONS. CONTRACT PRICE INCREASED BY $30,872.22 TO $260,365,310.82. NO CHANGE TO CONTRACT COMPLETION DATE.
2023-11-03A00060Change order$0CL191 LETTER C-0195 CONTRACT EXTENSION IS ENTERED INTO PURSUANT TO AUTHORITY OF FAR 52.249-10 DEFAULT (FIXED-PRICE CONSTRUCTION). THE CONTRACT COMPLETION DATE IS EXTENDED BY 779 NON-COMPENSABLE CALENDAR DAYS FROM NOVEMBER 20, 2023, TO JANUARY 7, 2026.
2023-10-24A00059Change order$64.0KCHANGES CL167-2 AND CL185-1 ENTERED PURSUANT TO AUTHORITY OF FAR 52.243-4 CHANGES. TOTAL CONTRACT PRICE IS INCREASED BY $64,000.00 TO $260,334,438.60. THE CONTRACT COMPLETION DATE REMAINS UNCHANGED.
2023-10-13A00058Supplemental agreement (work within scope)$201.7KIMPLEMENT CHANGES CL078, CL150, CL155, CL157, CL159, CL161, AND CL166 PURSUANT TO AUTHORITY OF FAR 2.243-CHANGES. CONTRACT PRICE IS INCREASED BY $201,702.23 TO $260,270,438.60. CONTRACT COMPLETION DATE REMAINS UNCHANGED.
2023-10-06A00057Change order$75.0KCL140 ENTERED PURSUANT TO FAR 52.249-10. CL168-1, CL186-1 ENTERED PURSUANT TO FAR 52.243-4. CONTRACT COMPLETION DATE SHALL BE EXTENDED BY 2 CALENDAR DAYS TO NOVEMBER 20, 2023. TOTAL CONTRACT PRICE IS INCREASED BY $75,000.00 TO $260,068,736.37
2023-09-25A00056Supplemental agreement (work within scope)$28.3KIMPLEMENT CHANGE CL164 EXISTING PIER VENTS CONCRETE FILL PURSUANT TO AUTHORITY OF FAR 52.243-CHANGES. TOTAL CONTRACT PRICE IS INCREASED BY $28,288.83 FROM $259,965,447.54 TO $259,993,736.37.
2023-09-01A00055Change order$402.1KIMPLEMENT CHANGES CL141-1A, CL158-1, CL162-1, CL167-1, CL172, CL173, & CL174-1 PURSUANT TO AUTHORITY OF FAR 52.243-4 CHANGES. CONTRACT PRICE IS INCREASED BY $402,099.82 FROM $259,563,347.72 TO $259,965,447.54. NO CHANGE TO CONTRACT COMPLETION DATE.
2023-08-24A00054Supplemental agreement (work within scope)$171.8KCONTRACT CHANGES CL125, CL134-2 & CL137-2 IMPLEMENTED PURSUANT TO FAR 52.236-2 DIFFERING SITE CONDITIONS CHANGES CL126 & CL128 IMPLEMENTED PURSUANT TO FAR 52.243-4 CHANGES. TOTAL CONTRACT PRICE IS INCREASED BY $171,776.17.
2023-07-28A00053Supplemental agreement (work within scope)$322.5KIMPLEMENTS THE FOLLOWING CHANGES: CL110, CL138, CL142, CL145, & CL149 UNDER THE AUTHORITY OF FAR 52.243-4 CHANGES & FAR 52.211-18 VARIATION IN ESTIMATED QUANTITIES. TOTAL CONTRACT PRICE INCREASED BY $322,463.62 TO $259,391,571.55.
2023-07-18A00052Supplemental agreement (work within scope)$468.6KIMPLEMENT CHANGE CL101 PURSUANT TO AUTHORITY OF FAR 52.236-2 DIFFERING SITE CONDITIONS & FAR 52.211-18 VARIATION IN ESTIMATED QUANTITY. TOTAL CONTRACT PRICE IS INCREASED BY $468,619.63 FROM $258,600,488.30 TO $259,069,107.93
2023-06-29A00051Change order$49.0KIMPLEMENT CONTRACT CHANGE CL141-1, MITER GATE GFE DRAWINGS UCO PART 1, TO DIRECT THE CONTRACTOR TO PROCEED WITH THE CHANGED WORK AND SERVE AS THE RFP WITH A NTE PRICE OF $49,000. CCD REMAINS UNCHANGED. TOTAL CONTRACT PRICE INCREASED BY $49,000.00.
2023-05-25A00050Supplemental agreement (work within scope)$445.8KIMPLEMENTS CHANGE NUMBERS CL106 AND CL122 PURSUANT TO AUTHORITY OF FAR 52.243-4 CHANGES AND CL143 PURSUANT TO FAR 52.236-2 DIFFERING SITE CONDITIONS. TOTAL CONTRACT PRICE INCREASED TO $258,551,488.30. NO CHANGE TO THE CONTRACT COMPLETION DATE.
2023-04-21A00049Supplemental agreement (work within scope)$402.8KA00049 - IMPLEMENT CHANGES CL111 CL113 CL117 CL118 CL120 CL121 & CL129-2. TOTAL CONTRACT PRICE IS INCREASED BY $402,808.59 FROM $257,702,919.68 TO $258,105,728.27. THE CONTRACT COMPLETION DATE SHALL REMAIN UNCHANGED BY THIS MODIFICATION.
2023-03-29A00048Change order$0MODIFICATION A00048, CL132 ADVERSE WEATHER DELAY 10 IS ENTERED PURSUANT TO AUTHORITY OF FAR 52.249-10 DEFAULT (FIXED-PRICE CONSTRUCTION). TOTAL CONTRACT PRICE REMAINS UNCHANGED AT $257,702,919.68 COMPLETION DATE REVISED FROM 10NOV23 TO 18NOV23.
2023-03-13A00047Supplemental agreement (work within scope)$498.4KCONTRACT FOR CHICKAMAUGA LOCK REPLACEMENT, CHATTANOOGA, TN. REFERENCE NO. R00061 IMPLEMENT CONTRACT CHANGES CL082-2, CL100, CL104, CL108, & CL127. CONTRACT PRICE IS INCREASED FROM $257,204,536.72 TO $257,702,919.68. CCD REMAINS UNCHANGED.
2023-02-24A00046Change order$50.0KMODIFICATION A00046 - CL134-1 R17AR18A BULKHEAD SEAL FORMWORK UCO PART 1 AND CL137-1 CCTV POLE UCO PART 1 ARE ENTERED PURSUANT TO AUTHORITY FAR 52.243-4 CHANGES. CONTRACT PRICE INCREASED BY $50,000 TO $257,204,536.72. CCD REMAINS UNCHANGED.
2023-02-15P00017Supplemental agreement (work within scope)$0CHICK LOCK CHAMBER, CHATTANOOGA, TN CL116 OFF-SITE STORED MATERIALS IS ENTERED INTO PURSUANT TO AUTHORITY OF FAR 52.243-4 CHANGES.
2022-12-14P00016Change order$10.10MMODIFICATION P00016 - CL077 REINFORCEMENT OVERRUNS AND CL107 CONCRETE OVERRUNS ARE IMPLEMENTED IAW FAR 52.211-18 VARIATION IN ESTIMATED QUANTITY.
2022-11-04A00045Change order$30.0KMODIFICATION A00045 - CL129-1 M1 CORNER PROTECTION ALTERATION UCO PART 1 IS ENTERED INTO PURSUANT TO AUTHORITY OF FAR 52.243-4 CHANGES. TOTAL CONTRACT PRICE IS INCREASED BY $30,000 TO $247,050,946.62. CONTRACT COMPLETION DATE REMAINS UNCHANGED.

Source: USAspending.gov prime award transactions and FSRS subaward reports, as loaded by SpendQuery (data as of 2026-10-23). Amounts are obligations (money committed), not outlays. The official record on USAspending.gov ↗