The M50 Upgrade Scheme involves upgrading ten Junctions, adding a third lane and an auxiliary lane in each direction over a distance of 31km between the M1 and Sandyford Junctions.SIAC Ferrovial, through Safecon, provided experienced health and safety officers during upgrading 8km of existing dual carriageway between the N4, (Galway Road), N7 (Naas Road/Red Cow Roundabout) and Ballymount Interchange in 2008.