Coonagh to Knockalisheen Distributor Road Advanced Works


  • Location: Coonagh Roundabout, Limerick City, Co. Limerick
  • Client: Limerick City & County Council

About this Project

P&D Lydon were contracted to upgrade the roadway between the Coonagh Roundabout and the existing Knockalisheen roundabout on the N18 in Limerick City. 

The works involved upgrading the single lane carriageway to a three-way inbound lane and a two way out bound lane along with the reconstruction of a larger and repositioned roundabout. 

The works were carried out in a phased sequence in order to maintain access and egress to the busy Tesco shopping centre and maintain pedestrian and traffic movements to the adjacent housing estates. 

The works involved the construction of reinforced concrete retaining walls (>4m) installation of 1800mm concrete culverts, 600mm water main/300mm foul sewer for Irish water, 200Kva services ducting/cabling for ESB networks along with all other telemetry and traffic light services.

Works were carried out on the R445 at the Coonagh Roundabout with an AADT > 16,000 with a Speed Limit of 60 Kph. Traffic Management was designed, implemented and monitored throughout the works by P&D Lydon.

These works were carried out in the very busy urban area in Limerick City with a population of 104,952. Access to the local businesses were maintained at all times.

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