Up to 22 February 2012, the Cork South Ring Road was designated as part of the N25. However, on 23 February, this section of road was redesignated as N40 and hence from this date, the N25 now commences at the Dunkettle Interchange. From the Dunkettle Interchange the N25 commences east as the East Cork Parkway dual-carriageway, with interchanges for Fota Island and Cóbh, and also Carrigtwohill. The next major destination on the route is Midleton. City bypass The dual-carriageway ends after bypassing Midleton with an ordinary two-lane road continuing east to Youghal. At Youghal a single carriageway bypass was completed in 2003, bringing the road around the west of the town to the northern side of Youghal. Here the road crosses the River Blackwater into County Waterford. Northeast of this, the road was widened as part of the N25 Kinsalebeg project. This consisted of widening of 3.5 kilometers of single carriageway to include a hard shoulder on both sides of the road. The route passes Dungarvan, with a future bypass at preliminary design stage, before reaching Kilmeaden west of Waterford city and onto the Waterford City Bypass. Beginning at Kilmeaden the bypass passes the Woodstown historic settlement, before crossing the River Suir between Gracedieu in County Waterford and Grannagh in County Kilkenny. The bypass meets the M9 Motorway and N24 at the Grannagh interchange, before joining the old N25 east of Slieverue. The bypass connects to the Outer Ring Road and the old N25 via a road known as the Western Link. The bypass is a tolled road. From Waterford, the N25 moves north to cross the River Barrow into County Wexford further up its estuary bypassing New Ross over Ireland's longest bridge, the Rose Fitzgerald Kennedy Bridge, since 29 January 2020. East of the town, the N30 diverges and connects northeast to Enniscorthy on the M11 Dublin - Wexford motorway. The N25 continues east to Wexford and meets the end of the N11 road west of the town. The N25 skirts the edge of the town around to the south and passes west of Rosslare to reach Rosslare Harbour. , New Ross bypass
Future developments
Other sections of the route may become motorway. Part of the N25 dual carriageway in Midleton is to have all its junctions grade-separated and all direct accesses removed from the route, thus making it suitable for upgrade to motorway status. TII is examining the possibility of a new road from Midleton to Youghal, with route options being investigated. As part of the Atlantic Corridor road scheme the section of road between Waterford and Rosslare Europort will be built as high quality dual carriageway or motorway standard. Some parts are currently in planning and design stages. However, due to deterioration of the Irish economy and the scaling back of the road building programme the proposed 2015 completion date on these projects was not possible.
Light aircraft crash
On 27 March 2017, a light aircraft crashed in a field adjacent to the road, killing the elderly pilot. It was one of three major aviation incidents involving Ireland in March 2017, with the Coastguard and Wales crash.
