Ireland’s $27BN Mission to Save Dublin

TL;DR

Dublin is finally building its first metro after 30 years of failed attempts, because crippling congestion costs €1.5 billion annually by 2040.

Key Points

• 1.Dublin is the 11th most congested city globally, with drivers losing 95 hours to traffic delays in 2025 — a 32% increase since 2023.
• 2.Dublin Airport has no rail link, making it one of the last European capitals without one, forcing travelers to rely solely on taxis or buses.
• 3.MetroLink will run 19km across 16 stations from Charlemont to Swords via the airport, cutting travel times by more than half.
• 4.The base cost is €9.5 billion (~€500M per km), but could balloon to €23 billion — comparable to New York's notoriously expensive Second Avenue Subway.
• 5.TBMs are used instead of cheaper cut-and-cover tunneling to minimize street disruption in Dublin's narrow, congested roads, but this dramatically raises costs.
• 6.Construction will close 20% of St Stephen's Green, disrupt the Western Commuter Line for nearly two years, and cause six weeks of round-the-clock noise per TBM pass — with groundbreaking targeted for 2027.