The Phoenix Park tunnel in Dublin is to undergo a €13.7 million upgrade.
The upgrade will reduce travel time for people living in Kildare who are travelling to work in Dublin.
Fine Gael TD for Kildare North, Anthony Lawlor, welcomed the announcement.
Mr Lawlor said: "This project will mean that commuter trains on the Kildare to Dublin Heiston line will travel onwards to Connolly, Tara St, Pearse and Grand Canal Dock Stations, which is a real boost for Kildare commuters.
"Currently people traveling from Hazelhatch, Naas and Sallins, have to get off the train at Heuston station and travel by bus or on foot into the centre of Dublin. Having the option to take the train directly into the city will dramatically reduce their travel time.
"I have been calling for this upgrade of the Phoenix Park Tunnel for a long time and I am delighted that Minister Donohoe has confirmed that the new train services will commence in Autumn 2016."
(CD)
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