Westport infrastructure works: marine advisory contract insights for engineers
Reviewed by Joe Ashwell

First reported on Roads & Infrastructure (AU)
30 Second Briefing
The Worley Arcadis Joint Venture has secured the marine technical advisory contract for Western Australia’s Westport programme, one of the state’s largest infrastructure undertakings centred on a new container port and associated road and rail links in Kwinana. The JV will advise on channel alignment, berth layout, breakwaters and dredging strategies, feeding into detailed planning for deep-water access and long-term port capacity beyond Fremantle’s current constraints. Geotechnical, coastal and structural inputs from this work will strongly influence reclamation design, ground improvement requirements and future marine construction methodologies.
Technical Brief
- Marine technical advisory scope will directly condition dredging volumes, reclamation extents and breakwater crest levels.
- Coastal and metocean characterisation will drive design wave, surge and sea-level allowances for long-life port assets.
- Structural concepts for berths and quay walls will need to accommodate heavy container handling and rail loadings.
- Integration of navigation, safety and environmental constraints into channel layout will influence long-term maintenance dredging regimes.
Our Take
Westport in Western Australia adds to a cluster of large transport-corridor pieces in our 506 Infrastructure stories, where long linear assets (rail or road) like HS2’s Chiltern tunnel dominate recent complex tunnelling and logistics coverage.
The use of a Worley Arcadis Joint Venture echoes the multi-party JV model seen on HS2 (e.g. Align JV and SCS JV), signalling that state-backed megaprojects in both the UK and Australia are leaning on consortium structures to spread design risk and specialist capability.
With the Western Australian Government as client, Westport sits in a jurisdiction that in our database is more often associated with mining-related infrastructure, suggesting this contract marks a continued push to balance export-focused port and freight capacity with broader state transport upgrades.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
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