Passengers hoping to travel on the Galway to Dublin and Westport to Dublin rail lines are being reminded about disruption to services this weekend.
Both lines include stops in the Shannonside region.
The disruption to scheduled services will commence in the early afternoon and will see bus transfers being called into use on some services heading westwards from Athlone.
In addition, one of the day's scheduled train services between Dublin and Galway will not run.
Barry Kenny, Corporate Communications Manager with Iarnród Éireann has this advice for passengers: