The crash on the Southern Motorway (SH1) between the Ellerslie-Penrose and Mount Wellington interchanges has been cleared and all lanes are now open.
Traffic remains congested from Northcote, across the Auckland Harbour Bridge through to Ellerslie.
The NZ Transport Agency advises motorists that the evening peak will be extended and to delay your journey if you can to give the traffic a chance to clear.
Earlier, one person was trapped with severe injuries following the two car crash this afternoon.
The crash happened on the southbound lanes between the Ellerslie-Penrose and Mount Wellington exits at around 3pm.