Maintenance of Dredging Facilities Government Contracts

PSC Z1KF Service code

Code facts

Spend category
Facilities & Construction Facility Related Services
Contract obligations
$814,872,369 In FY2025

PSC codes and definitions come from the GSA PSC Manual and contract spending from SAM.gov/FPDS.

Market summary

Open opportunities
23 75 notices posted in the last 90 days
Contract awards
71 In the last 12 months
Obligated
$523,235,940 In the last 12 months, net of deobligations

Top buying agencies by obligations

Rank Agency Obligated, FY2026–FY2027 Share
1 Department of the Army Department of Defense $518,872,965
2 Department of Homeland Security $4,594,695

Top contractors by obligations

Rank Contractor Obligated, FY2026–FY2027 Share
1 Great Lakes Dredge & Dock Co, LLC $71,494,530
2 Marinex Construction Inc. $59,996,284
3 Curtin Maritime Corp $58,508,449
4 Donjon Marine Co., LLC $53,176,440
5 The Dutra Group $50,342,526
6 Norfolk Dredging Company $30,782,224
7 Inland Dredging Company, L.L.C. $29,244,174
8 Cottrell Contracting Corporation $19,600,266
9 Mike Hooks, LLC $17,868,250
10 Maverick Constructors, LLC $15,467,555

See the full FY2025 ranking of PSC Z1KF contractors, by parent company.

Open contract opportunities

Notice Posted Due
Tybee Island Shoreline Protection Project Solicitation · ENDIST Savannah (USACE)
2027-2029 Maintenance Dredging, Anchorage Harbor, Alaska Solicitation · ENDIST Alaska (USACE)
FY27 harlingen placement area (PA)13 and 10 improvements Solicitation · ENDIST Galveston (USACE)
Calcasieu Bar River Channel, Pascagoula Harbor, and Panama City Harbor Maintenance Dredging Solicitation · ENDIST Wilmington (USACE) · W912PM27BA002
FY27 San Francisco District Maintenance Dredging Pre-Solicitation · ENDIST San Francisco (USACE)
Jacksonville Harbor Maintenance Dredging Solicitation · ENDIST Wilmington (USACE) · W912PM27BA003
USACE Enterprise Dredge Delivery Center Scope Dredge to Budget Shallow Draft Pre-Solicitation · ENDIST Wilmington (USACE)
USACE Enterprise Dredge Delivery Center Scope Dredge to Budget Contract Pre-Solicitation · ENDIST Wilmington (USACE)
W912EE27BA002 - Lease of One Cutterhead, Hydraulic Pipeline Dredge (Not Less Than 24-Inch Diameter) Fully Operated with Attendant Plant and Personnel, and with a Draft not to Exceed 9 Feet, for Construction and Maintenance Dredging - JBJ Waterway Pre-Solicitation · ENDIST Vicksburg (USACE)
W912EE27BA001 - Lease of One Cutterhead, Hydraulic Pipeline Dredge (Not Less Than 18-Inch Diameter) Fully Operated with Attendant Plant and Personnel, and with a Draft not to Exceed 9 Feet, for Construction and Maintenance Dredging - MS River Harbors Pre-Solicitation · ENDIST Vicksburg (USACE)
Tampa Harbor Improvements Industry Day Special Notice · ENDIST Jacksonville (USACE)
Norfolk Harbor Inner Channel to Newport News Maintenance Dredging located in Hampton Roads, Virginia Solicitation · ENDIST Norfolk (USACE)
Pass-a-grille-pass, maintenance dredging, pinellas county, florida Solicitation · ENDIST Jacksonville (USACE) · GROUP1-27-R-J001
Sources Sought for FY26 Atlantic Intracoastal Waterway Maintenance Dredging ��������� Select Sites Pre-Solicitation · ENDIST Savannah (USACE)
Jacksonville Harbor Maintenance Dredging Pre-Solicitation · ENDIST Wilmington (USACE) · W912PM27BA003
Calcasieu Bar River Channel, Pascagoula Harbor, and Panama City Harbor Maintenance Dredging Pre-Solicitation · ENDIST Wilmington (USACE) · W912PM27BA002
Pass-a-grille-pass, maintenance dredging, pinellas county, florida Pre-Solicitation · ENDIST Jacksonville (USACE) · GROUP1-27-R-J001
Virtual Industry Day for FY27 USACE Enterprise Dredge Delivery Center National Small Business MATOC Special Notice · ENDIST Wilmington (USACE)
Barataria Bay Waterway, Maintenance Dredging (Non-Continuous) Bayou Rigaud, Jefferson Parish, Louisiana (ED-25-008) Solicitation · ENDIST New Orleans (USACE)
Pre Solicitation Notice: FY27 Maintenance Dredging Yokohama North Dock Pre-Solicitation · ENDIST Japan (USACE)
Annual Maintenance Dredging of Morehead City Inner Harbor Pre-Solicitation · ENDIST Wilmington (USACE)
Reserve basin maintenance dredging contract for sites at the phildelphia navy yard in the public works department pennsylvania area of responsibiliy Solicitation · Naval Facilities Engineering Command (Navy)
FY26 Harlingen Placement Area (PA)13 and 10 Improvements Pre-Solicitation · ENDIST Galveston (USACE)
Show all 23

Recent contract awards

Award Awarded Obligated
The scope of work includes the expansion of the cedar hammock range bend widener located between stations 20+300 and… W912HN26CA025 · Marinex Construction Inc. · ENDIST Savannah (USACE) $19,138,783
FY26 dredging at SAN francisco BAY area-3 sites: base SF, sausalito, vallejo 70Z08826CSANF0001 · Curtin Maritime Corp · Coast Guard $3,271,367
The savannah inner harbor dredging contract provides construction services, including furnishing personnel… W912HN26CA027 · Marinex Construction Inc. · ENDIST Savannah (USACE) $33,052,500
The brunswick inner harbor dredging contract provides construction services, including furnishing personnel… W912HN26CA028 · Southern Dredging Co Inc. · ENDIST Savannah (USACE) $4,079,600
The U.S. Army corps of engineers (USACE), philadelphia district has a requirement for the maintenance dredging… W912BU26CA032 · Norfolk Dredging Company · ENDIST Philadelphia (USACE) $27,250,950
FY26 open channel dredge W9123726FA181 · Amherst Madison, Inc. · ENDIST Huntington (USACE) $1,821,793
Tampa harbor maintenance dredging egmont and mullet key cuts W912EP26CA017 · The Dutra Group · ENDIST Jacksonville (USACE) $15,562,850
Project title: fire island inlet and shores westerly to jones inlet, NY - navigation W912DS26CA018 · Great Lakes Dredge & Dock Co, LLC · ENDIST New York (USACE) $44,550,000
Maintenance dredging, hudson river federal navigation project, reach N04, troy, NY W912DS26CA016 · Land Remediation, Inc. · ENDIST New York (USACE) $1,975,600
Maintenance dredging, morehead city inner harbor W912PM26CA018 · Curtin Maritime Corp · ENDIST Wilmington (USACE) $4,326,247

Latest 10 of 71 awarded in the last 12 months listed here. See the rest on GovTribe.

Contract obligations by fiscal year

Fiscal year Obligated
FY2027 To date $0
FY2026 $523,467,660
FY2025 $814,872,369
FY2024 $836,053,544
FY2023 $723,043,322
Rank NAICS code Obligated, FY2026–FY2027 Share
1 237990 Other Heavy and Civil Engineering Construction $517,292,368
2 238910 Site Preparation Contractors $3,718,439
3 541380 Testing Laboratories and Services $2,336,128
4 541330 Engineering Services $120,724

Contract obligations by state

Rank Place of performance Obligated, last 12 months Share
1 South Carolina $78,056,046
2 Texas $75,333,567
3 New Jersey $63,342,034
4 Georgia $58,866,053
5 New York $57,967,169
6 Florida $49,895,186
7 Pennsylvania $48,631,927
8 Maryland $23,502,465
9 Mississippi $19,824,002
10 Alaska $14,874,313
11 North Carolina $12,882,352
12 Minnesota $7,374,400
13 West Virginia $4,108,323
14 Delaware $3,526,622
15 California $3,036,476
16 Arkansas $1,857,000
17 Washington $982,500
18 Indiana $365,303
19 Puerto Rico $148,288
20 Missouri $68,319
Show all 20

Shares are of everything obligated under PSC Z1KF in the last 12 months before deobligations, including work performed abroad or with no place of performance on record.

Quick answers

What is PSC Z1KF?

PSC Z1KF is Maintenance of Dredging Facilities, a service code in PSC Z, Maintenance, Repair, Alteration Real Property.

How many government contracts for maintenance of dredging facilities are there?

23 contract opportunities under PSC Z1KF are open now, and 75 notices were posted in the last 90 days. Federal agencies awarded 71 contracts under PSC Z1KF in the last 12 months, obligating $523,235,940.

How much do federal agencies spend under PSC Z1KF?

Federal contracts under PSC Z1KF obligated $814,872,369 in fiscal year 2025 and $2,897,436,895 in fiscal years 2023 through 2027.

Who are the largest contractors under PSC Z1KF?

The contractors with the most obligated under PSC Z1KF in fiscal years 2026 and 2027 are Great Lakes Dredge & Dock Co, LLC ($71,494,530); Marinex Construction Inc. ($59,996,284); and Curtin Maritime Corp ($58,508,449).

Which agencies buy the most under PSC Z1KF?

The agencies that obligated the most under PSC Z1KF in fiscal years 2026 and 2027 are Department of the Army ($518,872,965) and Department of Homeland Security ($4,594,695).

Which NAICS codes are used with PSC Z1KF?

The NAICS codes with the most obligated under PSC Z1KF in fiscal years 2026 and 2027 are 237990 Other Heavy and Civil Engineering Construction, 238910 Site Preparation Contractors and 541380 Testing Laboratories and Services.

Where is the work under PSC Z1KF performed?

By place of performance, the states with the most contract obligations under PSC Z1KF over the last 12 months are South Carolina ($78,056,046), Texas ($75,333,567) and New Jersey ($63,342,034).

What is the latest open contract opportunity under PSC Z1KF?

The latest open contract opportunity under PSC Z1KF is Tybee Island Shoreline Protection Project, solicitation from ENDIST Savannah (USACE), posted November 10, 2026.

On GovTribe

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