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    Aecom–Jacobs JV on Dublin MetroLink: delivery and design notes for engineers

    September 11, 2026|

    Reviewed by Joe Ashwell

    Aecom–Jacobs JV on Dublin MetroLink: delivery and design notes for engineers

    First reported on New Civil Engineer

    30 Second Briefing

    Transport Infrastructure Ireland has appointed an Aecom–Jacobs joint venture as programme delivery partner for the £8.4bn (€9.5bn) MetroLink, the long-planned rail line linking Swords, Dublin Airport and Dublin city centre. The JV will oversee integrated design, procurement and construction management for the mostly segregated, high-capacity metro system, which is expected to form the backbone of Dublin’s future mass transit network. Geotechnical, tunnelling and station box design will be critical, with interfaces around the airport and dense city-centre utilities likely to drive construction methodology and risk management.

    Technical Brief

    • Centralised programme management should standardise risk registers, cost control and schedule reporting across multiple civil works packages.

    Our Take

    The Aecom–Jacobs JV appointment effectively bookends a procurement sequence that, in our database, includes TII’s earlier tenders for a Programme Delivery Partner and for the largest rolling stock/core systems package, signalling that MetroLink is now moving from planning into a tightly structured delivery phase.

    With an estimated £8.4bn (€9.5bn) cost, MetroLink sits at the upper end of urban rail schemes in our infrastructure coverage, which is likely to drive strong scrutiny of risk allocation and schedule assurance in the JV’s contract, especially around the fully segregated underground sections near Dublin Airport.

    TII appears repeatedly in recent infrastructure items in our database, suggesting it is building an institutional model for mega-project governance that other Irish transport schemes around Swords and Dublin Airport may follow in terms of procurement phasing and long-term programme management.

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    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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