In a tweet at 6.50pm, the transport agency said there were queues back to the harbour bridge.
Google Maps showed the journey over the bridge to Symonds St would take over 15 minutes.
Earlier on Christmas Day, lanes one and two southbound on the Auckland Harbour Bridge were closed for an hour because of an ongoing police incident.
Just before 1pm Waka Kotahi warned motorists to consider an alternative route to avoid delays.
Google Maps showed the journey over the bridge taking more than half an hour for those heading south - it normally takes about four minutes. There was also a short delay for those heading north.