There will be changes to Enterprise cross border train services this weekend, Translink has announced.
Bus substitutions will be in place during the Irish Rail engineering works, which is due to take place on Saturday and Sunday.
The work is scheduled to take place between Dublin and Drogheda.
A Translink spokeswoman said: "Enterprise trains from Belfast Lanyon Place will operate to and from Drogheda, with bus substitutions between Drogheda and Connolly Station in Dublin.
"Passengers are advised to allow extra time for their journey, check online at www.translink.co.uk or use the journey planner before they travel as some bus substitution services may differ from train schedules."
Read more:
75 years of the Enterprise train service is celebrated in Belfast and Dublin
