Because of its complex layout it has a special place in railway lore: it is the only remaining
railway junction in Ireland where two lines cross at a near-90-degree angle, the other being the "Dundalk Square" crossing near . One route is the
Dublin-
Cork main line, while the other is the line from
Limerick to . Trains from all four locations are served, some connecting to in
County Clare and in
County Kerry. The layout consists of four platforms, all of which are in use. The main line platform, number 1, is a through platform and primary use is for trains from Cork which access the station from a loop off of the main "up" line to Dublin. It is also possible for trains from Dublin, Limerick or Waterford to access the Platform 1 if required. The terminal platform, to the west of Platform 1, is numbered 2 and 3 for parts nearest and furthest from the buffers respectively. This allows two trains to be present at once, typically allowing a Waterford train and Limerick train to be simultaneously present. Access to Platforms 2 and 3 for trains from anywhere other than Limerick requires reversing. A train coming from Waterford must cross the Dublin-Cork main line towards Limerick, reversing along the curve used by trains arriving from Limerick. It can then stop at the Limerick bay. Platform 4, added in 2019, is used by trains from Dublin towards Cork. The platform is accessed by footbridge from platform with lifts to the upper level also provided. A disadvantage with platform 4 is that cross platform interchange of trains is no longer possible. ==History==