As of 2019 the line is receiving a major upgrade focusing this year between Newbridge and Ballybrophy. There are possessions of most sections of the line every night to carry out relaying. There are also disruptions and cancellations on most weekends. All relaying is using a much heavier rail to give a much smoother ride on trains. The new track at 60 kg, is the same that is used on the TGV in France. As the upgrading continues there are speed restrictions which are affecting punctuality of trains. A new platform is under construction at Limerick Junction on the down line which will reduce conflicts and reduce journey times by 3–5 minutes. A fourth track is planned between Park West-Cherry Orchard and Heuston which is also intended to further reduce journey times. As of 2019, 13 out of 29 services on the route daily are delivered in 2 hours 30 mins or under. 11 trains operate the service in between 2 hours 30 mins and 2 hours 35 mins, with all services 2 hours 40 mins or less. An early morning express service from Cork to Dublin makes the non-stop journey in 2 hours 15 mins.