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N9 N10 Kilcullen to Waterford: Phase 4 Knocktopher to Powerstown

  • Project Type Roads / Bridges
  • Client Kilkenny County Council
  • Company Involvement The Knocktopher to Powerstown project was a Design & Build contract awarded by Kilkenny County Council under the Irish Transport 21 Framework. It was awarded to the Roadbridge/Sisk JV in January 2008. The Roadbridge element of the works was valued at €155 million.
  • Form of Contract Public Works Contract for Civil Engineering Works designed by the Contractor.
  • Dates January 2008 - March 2010
  • Location Co. Kilkenny, Ireland


This project comprised the earthworks, drainage, road construct, accommodation works, fencing and other ancillary works. The road scheme comprised 40.2km of dual carriageway together with associated interchanges and local roads.


Key Features

  • There are 3 significant river bridges: King’s River Bridge at 120m long, Nore River Bridge at 126m long, Barrow River Bridge at 105m long
  • Principal quantities comprised of: 3,885,000 m3 excavation, excavation of 555,000m3 of rock, 949,751 m2 of road surfacing
  • Structures included: 18 no. Underpasses, 22 no. Overbridges, 7 no. Underbridges, 9 no. River Bridges, 3 no. Rail Bridges