Traffic heading north into Auckland on the Southern motorway is heavy as far back as Huntly, NZTA says, after wild weather and two road incidents on Sunday afternoon.
On Sunday afternoon, a multiple car crash near Papakura on the motorway heading for the city blocked up lanes temporarily.
To add to delays, a breakdown has blocked the left citybound lane near Papakura, close to the earlier crash scene.
That breakdown has now been cleared, but the NZTA is still warning of long delays.
Traffic is backed up Ramarama to Takanini.