Ddydd Gwener 16 Mehefin, bu digwyddiad rhwng dau gerbyd ar yr A55 i’r dwyrain ger cyffordd 27 tuag at Lanelwy.  Roedd y ffordd tua’r dwyrain ar gau a’r ffordd tua’r gorllewin ar gau yn rhannol dros dro ar gais y gwasanaethau brys, fel bod modd i’r Ambiwlans Awyr lanio a helpu yn y digwyddiad.  Trefnwyd gwyriad lleol i’r dwyrain a olygodd bod y traffig yn parhau i lifo ond arweiniodd at oedi, ar benwythnos heulog iawn.
On Friday 16 June an incident involving two vehicles took place on the A55 eastbound near to junction 27 for St Asaph. The eastbound carriageway was fully closed and the westbound carriageway was closed temporarily at the request of the emergency services so the Air Ambulance could land and assist. A local diversion was put in place eastbound which kept traffic flowing but inevitably led to delays on what was a very sunny weekend.