Kinsale road roundabout

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The Kinsale Road Roundabout is a five-arm signalised junction and is located approximately 3 km south of Cork City in Ireland at the junction of the N25 South Ring Road, the N27 Airport Road/Frankfield Road and the South City Link Road. The South Ring Road has been constructed on a phased basis over the last 10-12 years. The completion of the downstream crossing, the Jack Lynch Tunnel, has led to a marked increase in traffic using the South Ring Road which in turn has led to increased delays at the Kinsale Road Roundabout. The South Ring Road is currently a dual 2 lane carriageway with a number of at-grade and grade-separated interchanges located along its length. Due to the complicated nature of the junction, it is known in local parlance as the "Magic Roundabout."

[edit] Flyover Construction

Recent traffic counts have shown that there are in excess of 85,000 vehicles using the roundabout daily. The straight-through movement between the east and west sides off the South Ring Road was the highest recorded traffic movement at the roundabout and represents approximately 40% of the total traffic using the roundabout. There was an urgent need for grade separation. In the determination of a preferred scheme solution a number of options were developed and evaluated in terms of environmental impact, safety, constructibility, cost, aesthetics, disruption to traffic during construction and land take. These options included:

Having compared and evaluated the four options it was considered that a flyover carrying the N25 South Ring Road over the existing roundabout was the most suitable solution.

Construction on the flyover started in mid 2005 and finished in late 2006. Effective traffic management throughout the duration of the project was vital as the same volume of vehicles used the roundabout during construction as they did before construction. From public opinion, traffic management was put in place effectively and major delays were rare.

[edit] Upgrade of nearby junctions

The Bandon Road Roundabout and Sarsfield Road Roundabout are located within a few miles of the Kinsale Road Roundabout. Grade separation is also proposed for these junctions in the near future. This will result 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.

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