Limerick Junction is one of those well known locations on the Irish Rail network. Opened by the GSWR in 1848, in conjunction with the opening of the Waterford & Limerick Railway from Limerick city to the GSWR's Cork mainline. From its opening in 1848 until CIE relayed the track and altered the station layout in 1967, every train on the Dublin-Cork mainline had to reverse into its single long island platform. Trains coming from the east & west, have to cross the Dublin-Cork line on a flat crossing adjacent to Limerick Jnc north cabin, and then have to reverse into the platforms. In 1967, CIE also built the 'direct curve', which is a line that allows Dublin-Limerick trains to avoid the junction altogether by bypassing it to the north of the station.

Limerick Junction had four platforms, the 4th accessed by a line that ran round the back of the station building, but this was taken out of use in 2006.  Platforms 1 & 3 are also unique in that they allow trains in opposite north/south directions to face each other at the long island platform. On the east side of the station is the former loco shed and water tower, used by engineering trains. At the south end of the station is Limerick Jnc south cabin. The signalling and station is due be upgraded soon. These pictures show Limerick Jnc during the last few years of 121, 141 and 181 Class loco hauled trains, using cravens and pushpull stock, along some more up to date shots showing the station alterations. All of these loco hauled services are now operated by railcars/ DMUs.