W912DW25C0001↗

Flatiron-Aecon Joint Venture received this contract from W071 Endist Seattle, Department of the Army: $336.83M obligated so far for construction of other non-building facilities. It runs to 2031-12-17.

Key facts · data as of Oct 21, 2026

Recipient
Flatiron-Aecon Joint Venture
Awarding agency
Department of the Army (Department of Defense)
Contracting office
W071 Endist Seattle (W912DW)
Obligated to date
$336.83M
Potential value
$336.83M
Ends
2031-12-17

Source: USAspending.gov prime award records (obligations: money committed, not outlays), data as of Oct 21, 2026.

Cite this page: SpendQuery, Award W912DW25C0001, data as of Oct 21, 2026, https://spendquery.com/award?id=CONT_AWD_W912DW25C0001_9700_-NONE-_-NONE-

HOWARD A. HANSON DAM ADDITIONAL WATER STORAGE PROJECT (AWSP) FISH PASSAGE FACILITY (FPF) IDAC

Definitive Contract · Department of the Army · to Flatiron-Aecon Joint Venture (UEI SWWPNKCFFLF5) · data as of 2026-10-21

Obligated to date$336.83M6 actions
Current value$336.83Mwith options exercised
Period2024-10-26 → 2031-12-17current end date

What it is

Product or service
Construction of Other Non-Building Facilities (PSC Y1PZ)
Industry
Other Heavy and Civil Engineering Construction (NAICS 237990)
Contracting office
W071 Endist Seattle (W912DW)
Competition
Full and open competition · 2 offers received
Pricing
Firm fixed price
How it was bought
Standalone contract
Solicitation
W912DW24R0004
Where the work is
King, WA · district WA-08

Obligations by fiscal year

FY2025$16.65M
FY2026$320.19M

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

6 actions since 2024-10-16. Each is a modification or amendment with the money it added or took back.

DateModificationKindAmountWhat the agency wrote
2026-07-22P00005Administrative change$0HAHD AWSP FPF MODIFICATION TO EXERCISE OPTION CLIN 0002 AND OTHER REVISIONS AS STATED IN MODIFICATION DESCRIPTION
2026-04-16P00004Funding only$145.00MHAHD AWSP FPF MODIFICATION TO EXERCISE OPTION CLIN 0002 AND OTHER REVISIONS AS STATED IN MODIFICATION DESCRIPTION
2026-03-24P00003Option exercised$175.19MHAHD AWSP FPF MODIFICATION TO EXERCISE OPTION CLIN 0002 AND OTHER REVISIONS AS STATED IN MODIFICATION DESCRIPTION
2026-03-18P00002Supplemental agreement (work within scope)$0THIS MODIFICATION REMOVES AND/OR UPDATES CONTRACT CLAUSES AND ALSO REVISES CLIN 0002 TO REFLECT THE TARGET PRICES AGREED UPON DURING NEGOTIATIONS.
2025-06-11P00001Supplemental agreement (work within scope)$946.4KPRE-CONSTRUCTION SERVICES, WITHIN SCOPE MODIFICATION
2024-10-160$15.70MHOWARD A. HANSON DAM ADDITIONAL WATER STORAGE PROJECT (AWSP) FISH PASSAGE FACILITY (FPF) IDAC

Source: USAspending.gov prime award transactions and FSRS subaward reports, as loaded by SpendQuery (data as of 2026-10-21). Amounts are obligations (money committed), not outlays. The official record on USAspending.gov ↗