A busy road has re-opened after water from a burst pipe froze over the highway causing traffic chaos.
The burst pipe also meant thousands of Flintshire homes faced disruption to their water supplies.
Welsh Water says there will be minimal disruption to homes as it continues to divert supplies to fix the pipe on the A494 at Llanferres, near Mold
North Wales Police had to close the Mold-Ruthin road for several hours on Wednesday due to safety concerns.
One witness said: "The water was quite deep at one point.
"Cars were backing up to drive through it and they were carrying the water further on their tyres and then it was freezing up.
"It was minus nine up here yesterday. So the road became quite slippery and some cars were bumping into each other."
Water supplies could be affected across the area.
A Welsh Water spokesman said: "Our crew worked throughout the night to repair the water main and it is anticipated this will be completed later this morning.
"While this work has been carried out, we have re-routed supplies via our water mains to minimise the impact on customers.
"We also tankered supplies to the nearby Pen-y-Coed Reservoir so that disruption to customers was further minimised."