Halcrow Barry acted as designer on behalf of Jons Civil Engineering for this design and build project along the N4 located to the west of Dublin.
The bypass, approximately 6 km in length involved the on line widening of the existing road from two lane dual carriageway with hard shoulder, to three lane dual carriageway with bus lanes along one of the busiest roads in Ireland. The scheme included sections of split level carriageway and conversion of the at-grade signalised Newcastle Road junction to a grade separated junction. Construction started in September 2007, and the new road was officially opened on 6th July 2009.
The scheme was officially opened by the Minister for Transport, Mr. Noel Dempsey, T.D., who, in welcoming the project said:
“Even in these times of significant economic constraint the Government is committed to investing in top class transport infrastructure. This new €75m dual carriageway upgrade is a further example of this commitment. The upgrade will shave almost half an hour off in-bound morning journey times which will be welcome news for all who use this route. The project was delivered on time and within budget and its benefits are manifold. It will reduce journey times, provide safer travel, reduce congestion and improve access to Dublin Airport and Dublin Port.”