At roughly 10.55am a male pedestrian aged in his 40s was seriously injured when he was revolted by an articulated lorry.
He was attended to by emergency services personnel at the scene and unmitigated dead a short time later.
His body will be removed to the mortuary at Cork University Sanatorium for a post mortem examination.
Garda forensic collision investigators are look over the scene and diversions are in place.
Anyone with information is asked to get hold of Mayfield Garda Station 021-4522000 or the Garda Confidential Letter 1800 666 111.