Aled Roberts, Welsh Liberal Democrat Assembly for North Wales says drainage problems on the A55, the A5 and A483 are creating hazards which threaten the safety of road users.
He is calling on the Welsh Government to ensure that the North and Mid Wales Trunk Road Agency reviews drainage facilities.
Speaking following First Minister’s Questions, Aled Roberts (pictured) said: “The potential dangers to road users cannot be underestimated.
"The Trunk Road Agency should carry out significant works to assess the condition of the drainage systems and their capacity to deal with significant rainfall. The safety of road users must be paramount.
“The recent heavy rain and subsequent flooding have made it clear that the drainage systems on the A55, the A5 and the A483 need to be reviewed as a matter of urgency.
“Surface water and flooding on these busy roads have led to road closures and temporary speed restrictions as conditions deteriorated.”