Iarnród Éireann issued the following list of affected services
INTERCITY
Enterprise service
Scheduled train services will operate in both directions between Belfast and Drogheda with a bus connection between Drogheda and Dublin Connolly. Existing train times will operate. Delays of approximately 30 minutes can be expected on arrival in Connolly and Belfast.
NORTHERN COMMUTER
Dundalk/Drogheda to Skerries rail service
A limited Dundalk/Drogheda to Skerries rail service will operate. There will be no connecting bus services for these trains
Alternative arrangements Customers travelling to/from the city centre are advised of the following alternative arrangements:
Dundalk/Drogheda/Laytown/ Gormanston to city centre
A special bus service will operate directly between Drogheda and Dublin Connolly. Rail tickets are valid on these special services. Customers from Dundalk, Laytown and Gormanston can connect to this special bus service by using the Dundalk/Drogheda to Skerries rail services. This service will utilise Dublin Port Tunnel.
Balbriggan/Skerries/Rush and Lusk/Donabate to city centre
From city to Balbriggan/ Skerries/ Rush and Lusk, Dublin Bus will provide an enhanced No 33 bus service and will accept rail tickets on this service. Passengers are to board the No 33 at the scheduled stops to Dublin City Centre (Lower Abbey Street) and return from Lower Abbey Street. This service will utilise Dublin Port Tunnel, as will Route 33X.
Donabate
An enhanced Dublin Bus service will operate from Donabate station to Malahide station, to connect to Dart services. This replaces the earlier advised Donabate to city centre service.
Peak time service: From Donabate: 07.00, 07.30, 08.00, 08.30, 09.00
From Malahide: 17.00, 17.30, 18.00, 18.30, 19.00
Dublin Connolly to Drogheda
A direct bus transfer will be in place between Dublin Connolly and Drogheda.
Tara Street and Pearse station to Drogheda
Northern commuters from Tara Street and Pearse station are advised to take the Dart to Dublin Connolly to avail of bus transfers to Drogheda.
Dart
Normal Dart services will operate, including to/from Malahide.