Limerick Junction is the same. One long platform with a crossover in the middle to allow Dublin bound trains to use the north end, and Cork bound trains to use the south. This relatively sensible arrangement is quite recent; for most of the station's existence there were buffers at the platform ends, and a Dublin bound train had to come along the running line parallel to the north end of the platform, then
set back into the siding alongside the south end! The only trains able to arrive or depart without reversing were trains to Limerick, which leave from a north facing bay platform.
Even today, Waterford bound trains leave from a south-facing bay platform, seeming to point towards Cork, but in reality just leading into a dead end siding. They then reverse over a line around the back of the station building and up the Limerick branch for quarter of a mile or so. Then they change direction again and proceed towards Waterford, crossing the main Dublin > Cork line on the flat. Until a few years ago, these trains were loco-hauled! It really is a most eccentric arrangement, and one that amazed me the first time I saw it.
http://www.youtube.com/watch?v=t8r0JbFQ-vU&feature=related