The B5127 Old Mold Road, Ewloe, at its junction with the Ewloe roundabout is closed due to a burst water main.
Remedial works are anticipated to be completed within two days.
As a result of the closure, traffic from the A494/A55/B5125 will not be able to gain access to Northop Hall/ Ewloe Green/Buckley. Traffic from Northop Hall will be able to access the A494/A55 but traffic from Buckley will not.
Flintshire County Council apologises for the inconvenience that this will cause to the travelling public.