The R684 road is a regional road

Regional road

A regional road in Ireland is a class of road not forming a major route , but nevertheless forming a link in the national route network. There are over 11,600 kilometres of regional roads. Regional roads are numbered with three digit route numbers, prefixed by "R" A regional road in Ireland is a...

 in Ireland

Republic of Ireland

Ireland , described as the Republic of Ireland , is a sovereign state in Europe occupying approximately five-sixths of the island of the same name. Its capital is Dublin. Ireland, which had a population of 4.58 million in 2011, is a constitutional republic governed as a parliamentary democracy,...

. Located in the south of Ireland near Waterford City, it links the junction with the R683

R683 road

The R683 road is a regional road in Ireland. Located in the south of Ireland at Waterford, it connects the city to the village of Passage East, County Waterford and to County Wexford via a car ferry connection, which operates across the Waterford estuary between Passage East and the village of...

 at Blenheim Cross to the village of Dunmore East

Dunmore East

Dunmore East is a popular tourist and fishing village village in County Waterford, Ireland. Situated on the west side of Waterford Harbour on Ireland's southeastern coast, it lies within the barony of Gaultier : a reference to the influx of Norman settlers in the area.-History:Iron Age people...

 in Co. Waterford.

It runs via Callaghane Bridge, Kilmacomb, where it meets the R685, and terminates at Dock Road in Dunmore East.

In addition to the section of the R683 linking Waterford city to the junction at Blenheim Cross, the R684 is known as the Dunmore Rd.