The first section of the multi-million euro N5 Westport to Turlough Road Project, bypassing the town of Castlebar, opened to traffic on 26 April 2023.

This new 10km section of dual carriageway stretches from the N5 roundabout at Turlough to the N5 roundabout at Pheasanthill on the Westport Road. The “left in/left out” compact grade separated junctions at the N60 Breaffy Road and N84 Ballinrobe Road were also opened.

The scheme is expected to fully open to traffic in the coming weeks.

A major road development scheme

The road development scheme comprises a 20km Type 2 dual carriageway from Westport to east of Castlebar and a 2.5km Type 2 single carriageway bypass to the north of Westport.

The road will form part of the N5 national primary route, connecting Westport in Co. Mayo to Longford town, where it joins the N4-M4 to Dublin.

The scheme also includes a 2.3km Type 3 single carriageway upgrade of the N59 Westport to Mulranny national secondary road.

Key design elements include:

  • two compact grade-separated junctions with the N60 and N84 roads
  • six roundabouts
  • 22 bridges, including two railway bridges over the Dublin-Westport line
  • a piled embankment
  • extensive earthworks

Our role in the project

ROD has been supporting the council and Mayo National Roads Office in the delivery of the scheme since 2007. ROD-AECOM acted as consultant engineers for TII phases 1-4 planning and design stage of the project, and in August 2017, ROD was appointed by the council to undertake phases 5-7 of the project, including development of detailed works requirements, procurement, contract administration and construction supervision.

We currently have a full-time resident engineering team working on site to monitor the works and liaise with both our technical review team and council representatives. 

The delivery of the project will enhance connectivity within the region, providing more balanced regional development. In addition to ensuring safer trips and shorter journey times, it will bring the midlands and east of Ireland closer in terms of travel time.


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