The effect of the Order is to temporarily prohibit and restrict traffic on lengths of the A55 trunk road at Penmaenbach Tunnel, Conwy to undertake works on or near the road.
Effaith y Gorchymyn yw gwahardd a chyfyngu ar draffig dros dro ar ddarnau o gefnffordd yr A55 wrth Dwnnel Penmaen-bach, Conwy, er mwyn gwneud gwaith ar y ffordd neu gerllaw iddi.