The A12 at Blythburgh in Suffolk is closed in both directions due to flooding between the B1125 and the A145.
The sea wall has been breached and emergency repairs will be carried out at low tide.
More top news
There'll be more cloud about today than yesterday but it will be warm. Risk of the odd sharp shower later.
Homes have been evacuated as the Army works to defuse an unexploded World War II bomb discovered near Wembley Stadium.
A new safety system at the Dartford Crossing will turn around vehicles considered too unsafe to travel through the tunnel.