Mott MacDonald to lead Ireland Connect rail: delivery lens for civil engineers
Reviewed by Joe Ashwell

First reported on New Civil Engineer
30 Second Briefing
Mott MacDonald has been appointed by Iarnród Éireann to lead Ireland’s national Connect rail programme, a multi-corridor upgrade of intercity routes linking Dublin with key regional cities. The commission covers programme management, systems integration and multidisciplinary design for track, structures, stations and digital signalling across the existing heavy rail network. For civil and geotechnical teams, the role points to upcoming packages involving corridor capacity works, bridge and formation upgrades, and staged construction on live lines under Irish and EU interoperability standards.
Technical Brief
- Mott MacDonald’s role as lead consultant implies centralised programme controls and interface management across all work packages.
- Integration of digital signalling with legacy track and structures will drive complex staging and possession strategies.
- Brownfield nature of the works suggests extensive night-time and weekend possessions on live passenger routes.
- Expect substantial bridge and formation strengthening to accommodate higher axle loads and increased service frequencies.
- Geotechnical interventions will likely include trackbed renewal, drainage upgrades and embankment stabilisation along ageing corridors.
Our Take
Ireland features relatively sparsely in our 133 Infrastructure stories, so a major intercity rail role for Mott MacDonald signals that Irish Rail is now commissioning work at a scale more commonly seen in UK and mainland European rail upgrades.
Within our 310 Projects/Contract Award pieces, repeat appearances by Mott MacDonald are often tied to complex, multi-phase transport corridors, suggesting the Connect scheme is likely to involve staged delivery and significant systems integration rather than a single civil works package.
Irish Rail’s move to a named programme like Connect aligns with other large rail clients in our database who use portfolio-style programmes to bundle renewals and enhancements, which typically gives more flexibility to incorporate digital tools and, increasingly, AI-based planning and asset management over time.
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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