
Image courtesy of Sacyr, Wills Bros Ltd, Somague.
A £220 million upgrade of the A6 between Dungiven and Drumahoe, including a bypass of Dungiven, with roundabouts connecting the scheme to the existing road network at either end.
The scheme involves the on-line/off-line improvement of the A6 trunk road from single carriageway to dual two-lane carriageway between Dungiven and Drumahoe in Northern Ireland.
Roughan & O’Donovan delivered the detailed design for 25.5km of dual carriageway between Dungiven and Drumahoe and provided a full-time designers site team, who worked closely with the design offices and the construction team monitoring construction of the works.
We developed the detailed design in accordance with the Design Manual for Roads and Bridges and relevant technical memoranda, including Eurocodes and their UK National Annexes, as implemented in Northern Ireland.
Our technical outputs were subject to the rigorous approval procedures of:
Our structures designs were also subject to Category II and Category III checks.
The scheme officially opened to traffic on Friday, 7 April 2023.
ROD also delivered the detailed design for the 15km dual carriageway scheme between Randalstown and Castledawson on the A6.
Securing the approval of a diverse range of stakeholders and delivering the detailed design of the structures, earthworks and road alignment to an ambitious timeframe presented key project challenges.
Soft ground to significant depth and environmental issues added further complexity.