The N25 Carrigtwohill-Cobh Interchange is an interchange

Interchange (road)

In the field of road transport, an interchange is a road junction that typically uses grade separation, and one or more ramps, to permit traffic on at least one highway to pass through the junction without directly crossing any other traffic stream. It differs from a standard intersection, at which...

 between the N25 road

N25 road

The N25 road is a national primary road in Ireland, forming the route from Cork to Rosslare Europort via Waterford City. The road is part of the E30 European route and a short section is also part of the E01 European route...

 (European route E30

European route E30

European route E 30 is an A-Class West-East European route, extending from the southern Irish port of Cork in the west to the Russian city of Omsk in the east...

), the R624 road

R624 road

The R624 road is a regional road in Ireland which runs from the east-south of the N25 in Tullagreen County Cork to Cobh Town Center. It runs to East Cork's biggest attraction the Fota Island resort and Zoo....

 and the R623 road, located in Tullagreen. The interchange is used when coming from Cork City, Midleton

Midleton

Midleton, historically Middleton , is a town in south-eastern County Cork, Ireland. It lies some 22 km east of Cork City on the Owenacurra River and the N25 road, which connects Cork to the port of Rosslare...

, Waterford City and Rosslare

Rosslare

The name Rosslare may refer to:*Rosslare Strand, a village in County Wexford, Ireland* Rosslare Harbour, a village in County Wexford, Ireland*The Rosslare Europort at Rosslare Harbour...

.
The interchange serves Cobh

Cobh

Cobh is a seaport town on the south coast of County Cork, Ireland. Cobh is on the south side of Great Island in Cork Harbour. Facing the town are Spike Island and Haulbowline Island...

 using the R624 road

R624 road

The R624 road is a regional road in Ireland which runs from the east-south of the N25 in Tullagreen County Cork to Cobh Town Center. It runs to East Cork's biggest attraction the Fota Island resort and Zoo....

, Carrigtwohill

Carrigtwohill

Carrigtwohill, officially Carrigtohill , is a village in County Cork, Province of Munster, Ireland with a population of 4,869 . It is located east of Cork city, bypassed by the N25 road and is part of Metropolitan Cork. Carrigtwohill is one of the fastest growing towns in Ireland. It is a major...

 and Glounthaune

Glounthaune

Glounthaune is a village situated some 10 km east of Cork,on the north shore of Cork Harbour, the estuary of the River Lee, in County Cork, Province of Munster, Ireland.-Transport:...

 using the R623 road. The R623 road was previously the old Cork-Midleton N25 road

N25 road

The N25 road is a national primary road in Ireland, forming the route from Cork to Rosslare Europort via Waterford City. The road is part of the E30 European route and a short section is also part of the E01 European route...

before the new dual carriageway from Cork to Midleton opened.