"Yn ystod y cyfnod hwnnw, mae'r gwaith o osod wyneb newydd ar ddarnau hir o'r A55, ynghyd â gwaith trwsio a chynnal a chadw sy'n cynnwys y twnelau, i gyd wedi'i wneud dros nos gan amharu ychydig iawn ar y traffig.
“During that period, resurfacing long lengths of the A55, repairs and maintenance, including to the route’s tunnels, have all been carried out overnight resulting in very little disruption to traffic.