Tara and Pearse Street Train Stations will be closed this weekend for works on the railway line.
DART Services will be operating between Connolly and Malahide/Howth at one end.
At the other end, DARTs will serve Grand Canal Dock and Bray/Greystones.
Dublin Bus will honour rail tickets for the duration of the maintenance.
It'll also cover transfers for Rosslare Intercity passengers.
Irish Rail has apologised for any inconvenience caused.