Project record

Gulfport Harbor deep-draft navigation improvements

Participation
Not assessed
Project facts checked

Signed Chief's recommendation dated 23 June 2026; Gulfport included in the House-passed September WRDA bill

Project sources

Gulfport's signed 2026 Chief's recommendation defines a deepened and widened navigation system with a new sedimentation basin. Its funding model separates initial shares and an additional post-construction GNF payment. Annual federal operation, maintenance, repair, replacement and rehabilitation (OMRR&R) is estimated at $17 million, including anticipated maintenance dredging.

Gulfport channel and basin diagram links staged funding and pipeline/property release to placement access, with a separate $17 million annual federal OMRR&R estimate including maintenance dredging

IMWO original Gulfport navigation and OMRR&R interface diagram; recommended scope, annual estimate and cost risks from the signed June 2026 Chief's Report and July USACE release.

Location

United States / Americas

Segment

Navigation-channel deepening and sedimentation basin

Phase

Planning / Confirmed

Last checked

4 November 2026

Coverage

Related sectors

Navigation-channel deepening and sedimentation basin 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
USACE Mobile District; Mississippi State Port Authority at Gulfport is the non-federal sponsor
Delivery parties
The reviewed recommendation and legislative records identify the public delivery bodies; a construction contractor is unspecified.
Contract route
Federal civil-works navigation proposal under the USACE planning process, with a non-federal cost-sharing sponsor. The 16 September 2026 House-passed H.R. 9497 includes the project in section 401. GovInfo's retrieved status record lists Senate receipt on 17 September as its latest action.
Execution window
The study began with an April 2023 feasibility cost-sharing agreement. The Chief signed on 23 June 2026; the House passed H.R. 9497 on 16 September, followed by recorded Senate receipt on 17 September. USACE's July release links subsequent design activity to federal appropriations and the sponsor match.
Works package
Recommended deepening of the Outer Harbor and Sound Channel to -46 ft MLLW and the Bar Channel to -48 ft MLLW; Sound and Bar widths of 350 ft and 500 ft; channel extension and bend changes; an eastern sedimentation basin at stations 625+00-665+00; planned dredged-material placement at the Pascagoula Ocean Dredged Material Disposal Site.
Marine interfaces
The estimate includes an abandoned pipeline beneath the navigation channel. Its treatment, real-estate availability, released excavation reaches and access to the placement site affect the sequence that can be assigned to a dredging campaign. The basin and channel dimensions describe the recommended geometry.
Commercial evidence boundary
At October 2025 prices, initial project first cost is estimated at $548.216 million: $411.114 million federal and $137.102 million non-federal, including $64,000 LERR. The recommended additional sponsor GNF payment is estimated at $50.8 million before eligible credits, with interest over up to 30 years following construction. Annual federal operation, maintenance, repair, replacement and rehabilitation (OMRR&R) is estimated at $17 million, including anticipated maintenance dredging. Local-service development has a separate estimate and payer.

Evidence gap

What remains unverified

Outstanding evidence

  • Project implementation authority, federal allocation and sponsor contribution
  • Design/cooperation agreement, cash calls and eligible credit treatment
  • Pipeline/property release, accepted reach sequence and current engineering/cost basis

Related records 2

Reporting status

Project phase
Planning
Evidence confidence
Confirmed
Last checked
4 November 2026
Cited sources
4

Sources and related records

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Source collections

Project sources 4