Harry Meighan

Harry Meighan

Mayo County Council


Roughan & O’Donovan-AECOM acted as consultant engineers for the Phases 1-4 planning stage of this project comprising 20km Type 2 dual carriageway from Westport to east of Castlebar and 2.5km Type 2 single carriageway bypass to the north of Westport.

In August 2017, ROD was appointed by Mayo County Council to undertake Phases 5-7 of the project. The project scope was simultaneously extended to include the first 2.5km section of the N59 Westport to Mulranny Type 3 single carriageway.

Our work covered: 

  • development of the detailed works requirements
  • management of the procurement process
  • contract administration
  • construction supervision

Prior to this appointment, ROD supported the council in the delivery of advance works contracts, including:

  • detailed topographic survey
  • detailed ground investigation
  • fencing
  • hedgerow clearance
  • high and medium voltage cable diversions
  • archaeological investigations

The first section of the multi-million euro project - a 10km section of dual carriageway stretching from the N5 roundabout at Turlough to the N5 roundabout at Pheasanthill on the Westport Road - opened to traffic on 26 April 2023.

The scheme was fully opened to traffic on 15 June 2023.

Key design elements

  • 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
  • A large number of drainage culverts  
  • Earthworks, including the removal of significant quantities of both peat and rock

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

Services provided:

  • Planning and development 
  • Environmental Impact Assessment
  • Specimen design
  • Preparation of contract documents
  • Contract procurement
  • Technical review of detailed design submissions
  • Construction supervision
  • Contract administration

Read our latest news story on the N5 Westport to Turlough Road scheme