ALL RAIL SERVICES between Connolly Station and Dun Laoghaire, in the south of the county, are off today.

It’s to allow for works on the line – including resignalling and alterations to track layout at Grand Canal Dock station, in the south city.

Here’s what you need to know:

• No DART services will operate between Connolly and Dun Laoghaire. Dublin Bus will accept rail tickets for customers travelling between the city and southside stations.
• DART services will operate between Howth/Malahide and Connolly – and between Dun Laoghaire and Bray/Greystones.
• Rosslare Europort – Dublin services will operate with bus transfers between Bray and Dublin Connolly in both directions.
• Drogheda and Maynooth Commuter services will operate to/from Dublin Connolly Station only.

New layout 

According to Irish Rail, the works today involve the final commissioning of the latest phase of new signalling under the City Centre Resignalling Project, as well as the track alterations at Grand Canal Dock.

• Related: Inside the 139-year-old Phoenix Park tunnel opening up to rail passengers this autumn > 

The project will result in northbound Darts and commuter trains calling to platform 1 in Grand Canal Dock instead of platform 2.

Platform 2 will instead be used as a terminus point for new Kildare line to Grand Canal Dock services – which will be introduced towards the end of the year following completion of the upgrade to the Phoenix Park Tunnel line.

Says an Irish Rail statement:

This phase of resignalling covers Connolly to Sandymount, and is an essential prerequisite for the introduction of the new Kildare line to Grand Canal Dock services which the Phoenix Park Tunnel project will facilitate.

Here’s the company’s video explainer of what’s going on:

Read: NTA defends planned use of Phoenix Park tunnel following Irish Rail concerns >