Iarnród Éireann will undertake a full track renewal of the country's busiest section of rail line.
The train line between Dublin's Connolly and Grand Canal Dock will close today until the 5th of January.
For the first time in twenty years, Iarnród Éireann will undertake a full track renewal of the country's busiest section of rail line.
The works will see 4-point-2 kilometres of track fully replaced from Connolly Station through to Pearse Station.
Irish Rail has apologised for the inconvenience caused by the essential works, but says the Christmas and New Year season sees the lowest number of passengers throughout the year.

Daniel Kinahan Set To Apply For Bail
Former Swimming Coach George Gibney Jailed For Over 15 Years For Sexual Abuse Of Children
Robert Pether Returning To Ireland After Five-Year Iraqi Detention
Over 23,000 Teachers Beginning Industrial Action Today
New Funding Announced For Youth Services And Counselling In Kildare On World Mental Health Day
Jury In Triple Murder Trial Of Louth Family Sent Home
Appointment Cancellations Expected As Strikes To Take Place Next Week
Families Face Delays Arranging Funerals Amid Pressure On Post-Mortem Services