On 8 March 1858 the line was extended to Birr and became a junction when the line to Nenagh was opened on 5 October 1863 eventually forming a new through route to Limerick via Nenagh.
On 8 March 1858, the line was extended to Birr and became a junction when the line to Nenagh opened on 5 October 1863, eventually forming a new route through Limerick via Nenagh.