Delivering MetroLink
Who is Delivering MetroLink?
Transport Infrastructure Ireland (TII) is responsible for the delivery of MetroLink on behalf of the Government. TII oversees the planning, procurement and implementation of major transport infrastructure projects across Ireland and is leading the delivery of Dublin's first metro railway.
The National Transport Authority (NTA) is responsible for strategic transport planning and investment in the Greater Dublin Area, ensuring MetroLink forms part of an integrated and sustainable public transport network.
Our Partners
The successful delivery of MetroLink requires collaboration across multiple organisations and sectors.
MetroLink is being developed in partnership with:
- Department of Transport
- National Transport Authority (NTA)
- Local Authorities
- Transport operators and infrastructure providers
- Utility providers
- Statutory agencies
- Delivery and technical partners
Working together, these partners help ensure MetroLink is integrated with existing transport networks and supports the long-term development of the Greater Dublin Area.
Governance and Oversight
MetroLink is delivered through established governance and oversight arrangements to ensure the project is managed effectively, transparently and in accordance with Government policy.
Robust governance structures support decision-making, risk management, programme oversight and accountability throughout the delivery lifecycle of the project.
These arrangements help ensure MetroLink is delivered safely, efficiently and in a manner that delivers long-term value for passengers, communities and the wider economy.
Business Case
To ensure that public investment delivers value for money, the Public Spending Code sets out requirements for the evaluation, planning and management of public investment. The preparation of a Business Case is a key element of meeting these requirements. The Public Spending Codes requires that both the Preliminary Business Case (PBC) and Final Business Case for public investment projects are published.
Under the Public Spending Code for Public Transport Capital Projects the NTA are Approving Authority. Where project proposals are in excess of an estimated capital cost of €100 million, the Government is the Approving Authority for key decision gates with NTA performing the day-to-day role of the Approving Authority.
The MetroLink Preliminary Business Case prepared by Transport Infrastructure Ireland (TII) was approved by the NTA Board for submission to the Department of Transport (DoT) and onwards submission to Department of Public Expenditure and Reform (DPER) for review. Further to DoT and DPER review (including independent review by JASPERS and the Major Projects Advisory Group (MPAG)) elements of the PBC around timeline, costs and benefits were updated to inform the Government decision.
In July 2022, the Government granted Approval in Principle to the NTA to enable the submission of a railway order application by TII to An Bord Pleanála in respect of the MetroLink project (Decision Gate 1).
This Preliminary Business Case reflects the document as considered by Government with a Cover Note which sets out any significant revisions to timeline, costs and benefits arising from the consideration of the PBC from Government.
On 16 September, the government approved the Detailed Business Case. It is anticipated that the Detailed Business Case* will be published on the NTA website in the coming days. For further information, click here.
(* certain sensitive information may be redacted due to the procurement process)
Preliminary Business Case Documentation
The MetroLink Preliminary Business Case Documentation can be accessed below:
- MetroLink Preliminary Business Case
- MetroLink Preliminary Business Case Appendices
- JASPERS Independent Technical Assessment
- Major Projects Advisory Group Review Note
How MetroLink Will be Built
MetroLink will be delivered through a series of major work packages that move the programme from planning and procurement into construction and operations.
The project will be delivered in line with international best practice for large‑scale metro programmes and constructed to high standards of safety, quality and sustainability. Delivery of the metro will include new stations, tunnels, systems and operational facilities, fully integrated with the wider public transport network.
The first package to be delivered is M100 Enabling Works, which prepares station sites, utilities and heritage areas in advance of the main infrastructure works. These enabling works are essential to creating safe, ready‑to‑build conditions ahead of tunnelling, station excavation and major civil engineering activity.
MetroLink is expected to support an estimated 7,200 - 9,100 direct construction jobs each year, along with a further 2,500 - 3,000 indirect jobs across supply chains, specialist services and regional suppliers nationwide.
Find Out More
Published: 17/09/2026
