M1 Motorway Widening (Drinan to Lissenhall Interchange) – Design & Build

The project comprises the widening of approximately 4.5 kilometres of the M1 motorway north of Dublin.  The existing motorway is being widened from two to three lanes on each side by removing the central median and replacing same with a new concrete barrier.  The work is taking place in a live traffic environment on a road which carries in excess of 100,000 vehicles per day.  Construction commenced in 2012 and is expected to be completed in spring 2013.

OCSC provided design build services to SIAC Construction Limited who were the appointed contractors for this Design & Build Scheme.  OCSC advised in relation to vertical carriageway alignment and drainage as well as on retaining structures, underpasses and bridge parapets.