Project record

Puget Sound Dry Dock 4 seismic retrofit and waterfront interfaces

Participation
Not assessed
Project facts checked

NAVFAC reports seismic retrofit completion on 26 August 2026; next vessel entry is not established by that milestone

Project sources

The existing Dry Dock 4 at Puget Sound Naval Shipyard underwent a seismic retrofit under a Kiewit-Alberici task order. Early initial completion allowed further work before the next maintenance availability. NAVFAC's completion statement concerns this intervention, not a new dry dock or the broader shipyard programme.

Barge and crane bringing equipment alongside Dry Dock 4 at Puget Sound Naval Shipyard before the seismic retrofit, in a shipyard photograph posted in November 2025

Scott Hansen / U.S. Navy via DVIDS, public domain. Pre-retrofit equipment arrival, posted 19 November 2025; caption dates the scene to October 2025, while image metadata differs. Resized only; not an August completion photograph. U.S. military imagery does not imply endorsement.

Location

United States / Americas

Segment

Marine infrastructure

Phase

Completed / Confirmed

Last checked

28 August 2026

Coverage

Related sectors

Marine infrastructure 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. Navy / NAVFAC Northwest / Puget Sound Naval Shipyard & Intermediate Maintenance Facility
Delivery parties
Kiewit-Alberici Joint Venture
Contract route
NAVFAC awarded a USD 377.7m task order on 2 September 2025. The August 2026 completion account reports USD 517m after additional funded scope; it does not provide a like-for-like cost variance or a priced breakdown of each addition.
Execution window
The original work began in November 2025 according to the shipyard's published equipment-arrival caption. Initial retrofit work finished in April 2026; further work used the early-completion window. NAVFAC marked completion on 26 August. The next vessel entry is not confirmed in the cited records.
Works package
Seismic retrofit of the existing dry dock's perimeter using grouted and tensioned structural anchors, followed by additional quay-wall and pump-well reinforcement and removal of decommissioned keel blocks for laydown space.
Marine interfaces
Anchors pass through the concrete dock wall and drainage layer into native soil. Works beside the caisson and pump well interface with dock access, pumping and the adjacent operating waterfront; construction access and maintenance availability constrain the sequence.
Commercial evidence boundary
The two disclosed contract values refer to original and expanded scope. Geotechnical investigation and modelling reduced the initially estimated anchor count; these records do not establish unit rates, a new dry-dock award, or an independently verified saving.

Contract and delivery chain

Work packages and named roles

Published scope, named parties and supporting evidence for each workstream.

Task-order scope

Initial perimeter seismic retrofit

Named party
NAVFAC Northwest / Kiewit-Alberici Joint Venture
Evidence status
Confirmed
Source position
The 2 September 2025 owner award states USD 377.7m and a seismic upgrade to the existing Dry Dock 4. Source
Expanded waterfront works

Quay-wall and pump-well reinforcement; laydown space

Named party
NAVFAC Northwest
Evidence status
Confirmed
Source position
The 27 August account reports additional funded works and a total expanded contract value of USD 517m. Source
Operating interface

Maintenance-window sequencing

Named party
Puget Sound Naval Shipyard / NAVFAC Northwest
Evidence status
Confirmed
Source position
The May account sets out the opportunity to add scope before the next scheduled availability; it is not a record of the next vessel entering the dock. Source

Evidence gap

What remains unverified

Outstanding evidence

  • Handover and return to the next scheduled dock availability
  • Operational interfaces at the caisson, pump well and adjacent quay walls
  • Scope-specific cost records rather than headline award-value comparisons
  • New dry-dock approvals and delivery milestones distinct from this retrofit

Related records 1

Reporting status

Project phase
Completed
Evidence confidence
Confirmed
Last checked
28 August 2026
Cited sources
4

Sources and related records

Project changes Methodology Email a correction Project tracker
Source collections

Project sources 4