Tullamore, Co.Offaly, is located on the Great Southern & Western Railway's 1850s built branch line from Portarlington to Athlone. The line was operated as a branch line, with infrequent services to and from Portarlington and Athlone. In the early 1970s however, Galway and western line services were re-routed via the Portarlington line and with the increased services on this route, Tullamore Station gained an additional platform and the line was re-signalled throughout with modern CTC from the late 1970s onwards. The single story GSWR station building at Tullamore clearly show that this was not intended to be the mainline to Galway and the west. At the east end of the station is the GSWR brick built signal cabin, redundant for quite some time. The goods shed located at the west end of the station was also made redundant with the opening of a freight yard on the down side of the line, consisting of a bagged cement/fertilizer store and cement silo, these nowadays are disused also.