The Order will prohibit pedestrians along lengths of the A55 trunk road between Junction 8 (Pant Lodge Interchange), Anglesey and Junction 9 (Treborth Interchange), Gwynedd.
Bydd y Gorchymyn yn gwahardd cerddwyr ar ddarnau o gefnffordd yr A55 rhwng Cyffordd 8 (Cyfnewidfa Pant Lodge), Ynys Môn a Chyffordd 9 (Cyfnewidfa Treborth), Gwynedd.