Bydd prosiectau’n cael eu cwblhau neu’n cael eu hatal dros dro ar hyd yr A55, yr M4 a phob cefnffordd fawr yn ystod y cyfnod sy’n arwain at y Nadolig, ac eithrio sefyllfaoedd brys nad ydynt wedi cael eu trefnu ymlaen llaw.
Projects will be completed or paused along the A55, M4 and all major trunk roads in the run up to the festive period, other than unscheduled emergency situations.