The Kinsale Road Roundabout (Irish: Timpeall Bóthair Chionn tSáile) is a five-arm signalised roundabout in Cork City in Ireland, located approximately 3km south of the city centre at the junction of the N40 South Ring Road and the N27 South City Link/Airport Road.
[1] With the completion of the downstream crossing of the River Lee, the Jack Lynch Tunnel, there was a marked increase in traffic using the N40, which in turn led to increased delays at the Kinsale Road Roundabout.
Ultimately it was considered that a flyover carrying the N40 South Ring Road (east-west over the existing roundabout) was the most suitable solution.
Both roundabouts underwent grade separation works together owing to their proximity to each other.
This resulted in a non-stop continuous dual-carriageway between the area west of Ballincollig to the Dunkettle Interchange near the north portal of the Jack Lynch Tunnel.