Cahir is a town in County Tipperary in Ireland. It is also a civil parish in the barony of Iffa and Offa West. For much of the twentieth century, Cahir stood at an intersection of two busy national roadways: the Dublin to Cork N8, and the Limerick to Waterford N24. The N8 was realigned in 1991 to run west of the town, while the old road through it was renumbered th…Cahir is a town in County Tipperary in Ireland. It is also a civil parish in the barony of Iffa and Offa West. For much of the twentieth century, Cahir stood at an intersection of two busy national roadways: the Dublin to Cork N8, and the Limerick to Waterford N24. The N8 was realigned in 1991 to run west of the town, while the old road through it was renumbered the R670. Traffic from the N24 still left the town badly congested, however, until October 2007 when this road was also realigned to bypass Cahir to the north and east. The same road improvement scheme saw major changes to the N8 corridor: a new motorway, the M8, was constructed west of the town between 2006 and 2008. Access to Cahir from this motorway is gained at Junctions 10 and 11.