It is due to Engineering Works this weekend
Kildare rail users are being warned of disruption to service today, due to Engineering Works between Portlaoise and Thurles.
It will affect, the Heuston to Cork, Limerick and Tralee lines.
Iarnród Éireann says bus transfers will operate between Portlaoise and Thurles.
While a number of services to Portlaoise will be delayed.
Dart and Commuter services are also suspended between Dublin's Connolly and Dun Laoghaire this weekend.
Irish rail spokesperson, Jane Cregan has this advice: