Several services to and through Kildare will be disrupted.
Engineering works contine on the Kildare rail line today.
Irish Rail has indicated that this means disruption to some services between Portlaoise and Heuston.
7 services, in all, will be affected, daily, until Thursday evening.
The services affected are:
22:10 Heuston to Portlaoise will operate to Kildare only, bus transfer direct from Kildare to Portlaoise, second bus transfer from Kildare to Monasterevin, Portarlington and Portlaoise
21:25 Portlaoise to Heuston is cancelled
22:30 Portlaoise to Heuston will commence from Kildare at 23:05hrs
19:25 Cork to Heuston will call additionally at Portarlington and Kildare
20:25 Cork to Heuston will call additionally at Portarlington and Kildare