Project record

Sabine-Neches Contract 6 offshore channel deepening

Aerial visualization of a trailing suction hopper dredge working in the buoyed Sabine Pass entrance channel between the Gulf jetties

IMWO artist's impression of the published Sabine-Neches Contract 6 offshore channel deepening scope

U.S. Army Corps of Engineers contract W912HY24C0016 places Great Lakes Dredge & Dock on approximately 41 miles of Sabine-Neches entrance-channel deepening and extension. USACE's pre-bid scope carried about 35.8 million cubic yards of hopper dredging, while USAspending reports USD 219,108,350 in current obligations and USD 235,422,810 as potential value with all options. Sabine-Neches Navigation District expects the package to finish in April 2027, but the reviewed public chain does not isolate current production, assigned dredges, accepted quantities or named lower-tier firms.

Project signal

Delivery in United States

Current status Great Lakes holds the USD 219.108 million Contract 6 obligation; its USD 235.423 million potential value, April 2027 owner finish, production, assigned fleet and lower tiers remain to be confirmed Source confidence Confirmed

Location

United States / Americas

Segment

Dredging and waterways

Status

Great Lakes holds the USD 219.108 million Contract 6 obligation; its USD 235.423 million potential value, April 2027 owner finish, production, assigned fleet and lower tiers remain to be confirmed / Confirmed

Last checked

6 August 2026

Coverage

Related sectors

Dredging and waterways is the primary work classification. Related sectors connect this record to adjacent marine delivery and market coverage.

Subject index

Related subjects

These subject pages bring together related projects, technical articles, reports, and evidence methods.

Project anatomy

Contract scope and delivery roles

Client / authority
U.S. Army Corps of Engineers, Galveston District, with Sabine-Neches Navigation District as local non-federal sponsor
Delivery parties
Great Lakes Dredge & Dock Co., LLC - prime contractor under W912HY24C0016, Hopper-dredging support, survey, disposal, marine services and other lower tiers - not named in the cited public records; USAspending reports zero subaward actions
Contract route
USAspending records a firm-fixed-price definitive contract under sealed-bid solicitation W912HY24B0021. The procurement used full and open competition with no set-aside, received two offers and required an individual subcontracting plan. The award was signed on 20 September 2024 to Great Lakes Dredge & Dock Co., LLC under NAICS 237990 and PSC Z1KB.
Execution window
The federal award period runs from 20 September 2024 to 4 April 2027 and was last modified in the USAspending summary on 6 March 2025. Great Lakes' October 2024 announcement expected work to start in mid-2025 and finish in late 2026. SNND's November 2025 package schedule instead expected Contract 6 to finish in April 2027. The two forecasts should be treated as dated schedule snapshots rather than proof of delay, mobilisation or completion.
Works package
USACE defined about 41 miles of Contract 6 channel work: approximately 28 miles of existing channel from Sabine Bank Channel to the inland end of Sabine Pass Channel plus a roughly 13-mile offshore extension. The pre-bid notice estimated 35.8 million cubic yards, split between about 6.9 million cubic yards of shoaled material and 28.9 million cubic yards of new work, to be removed by hopper dredging. The wider authorized geometry deepens offshore reaches from 42 to 50 feet MLLW and the Sabine Pass Jetty and inland reaches from 40 to 48 feet, while Contracts 7 through 9 remain separate later packages.
Marine interfaces
Contract 6 crosses the open-Gulf extension, Sabine Bank, Outer Bar, Jetty and Pass approaches serving a high-volume liquid-bulk, LNG, petrochemical and military waterway. Delivery depends on hopper-dredge production, live-traffic separation, sediment classification, ocean or approved placement routing, environmental controls, buoyed-channel management and repeated pre- and post-dredge hydrography. A survey date or elapsed contract period does not establish accepted volume or navigation availability.
Commercial evidence boundary
USAspending currently reports USD 219,108,350 both as total obligation and base plus exercised options, and USD 235,422,810 as base plus all options. A later USACE contractor briefing listed USD 235,245,750 as total contract value, while Great Lakes reported a rounded USD 235 million base-and-open-options total and initially described about USD 16 million of options pending. These are defensible dated snapshots with different definitions and update times; none should be presented as a certified final account.

Contract and delivery chain

Named roles and open packages

Named appointments are shown against the workstream they cover. Unallocated packages remain open until a project source identifies the responsible party.

Federal owner and local sponsor

Sabine-Neches Channel Improvement Project, Contract 6

Named party
USACE Galveston District and Sabine-Neches Navigation District
Status
Confirmed
Source position
USACE identifies itself as Contract 6 client and SNND as the local non-federal sponsor within the authorized channel-improvement programme. Source
Prime award

W912HY24C0016 hopper-dredging contract

Named party
Great Lakes Dredge & Dock Co., LLC
Status
Confirmed
Source position
USAspending records Great Lakes as recipient, USD 219,108,350 in current obligations and USD 235,422,810 as potential value with all options. Source
Competition and contract form

W912HY24B0021 solicitation and resulting award

Named party
USACE Galveston District and Great Lakes
Status
Confirmed
Source position
The federal record identifies a sealed bid, full and open competition, two offers, no set-aside, firm-fixed-price terms and an individual subcontracting plan. Source
Dredging scope

Offshore extension and entrance-channel second cut

Named party
USACE Galveston District
Status
Confirmed
Source position
USACE's pre-bid notice defines approximately 41 miles and 35.8 million cubic yards of hopper dredging, including 6.9 million cubic yards of shoal and 28.9 million cubic yards of new work. Source
Delivery schedule

Contract 6 completion window

Named party
USACE, SNND and Great Lakes
Status
Confirmed
Source position
The federal award currently ends on 4 April 2027, SNND expected an April 2027 finish, and Great Lakes' earlier award announcement carried a late-2026 estimate. Source
Hydrographic monitoring

Sabine Bank, Outer Bar, Jetty and Pass surveys

Named party
USACE Galveston District
Status
Confirmed
Source position
USACE lists current 2026 surveys across Contract 6 reaches. Those publications establish monitoring activity, not Contract 6 production, achieved depth or acceptance. Source
Fleet allocation

Hopper dredges and support craft

Named party
Great Lakes and undisclosed delivery parties
Status
Undisclosed
Source position
Great Lakes publishes a broad hopper fleet and Sabine-Neches programme imagery, but the reviewed records do not assign a named dredge or support craft specifically to Contract 6.
Lower-tier supply chain

Survey, marine services, disposal and other subcontract packages

Named party
Undisclosed lower tiers
Status
Undisclosed
Source position
USAspending records an individual subcontracting plan and zero reported subaward actions. That combination does not identify firms and does not prove that no lower-tier work occurred. Source
Completion and acceptance

Final quantity, placement, hydrography and account

Named party
USACE Galveston District and Great Lakes
Status
Not evidenced
Source position
The public chain reviewed through 6 August 2026 does not provide accepted quantities, completed placement, final hydrographic acceptance, demobilisation or a certified final account.

Project timeline

Material developments

Dated events that changed scope, counterparties, delivery, commissioning or operating status.

Open this project in the Change Log

SNND schedules Contract 6 in the second four-foot cut

The owner schedule places Contract 6 after completed first-cut work, targets April 2027 and leaves Contracts 7 through 9 as later packages.

Source

Great Lakes publishes award value and delivery forecast

Great Lakes reported USD 219.1 million awarded, about USD 16 million in pending options, a mid-2025 start and late-2026 completion estimate.

Source

USACE signed Contract 6 with Great Lakes

The firm-fixed-price, full-and-open sealed bid drew two offers and established the current USD 219.108 million reported federal obligation.

Source

USACE defines Contract 6 quantities

USACE defined about 41 miles and 35.8 million cubic yards of hopper dredging for the contract before federal bids closed.

Source

Evidence gap

What remains unverified

Outstanding evidence

  • Contract-specific mobilisation and verified production start
  • Option exercise, award modifications and obligation changes
  • Assigned hopper dredges, support craft and disposal route
  • Reported subawards and named survey, marine-service or disposal lower tiers
  • Shoal and new-work quantities reconciled against the 35.8-million-cubic-yard baseline
  • Reach-level pre- and post-dredge hydrography and acceptance
  • April 2027 completion, demobilisation and navigation release
  • Certified final value and closeout

Related records 4

Reporting status

Delivery, confirmed confidence

Last checked 6 August 2026 across 8 cited sources. The dated timeline above carries the project events.

Last checked 6 August 2026 Cited sources 8

Sources and related records

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Source collections

Project sources 8