A crash blocked several lanes on Auckland's Southern Motorway and two lanes on the Auckland Harbour Bridge were blocked by a falling object.
The incidents are causing delays for motorists as the long weekend draws to a close.
A crash just after the Mt Wellington Highway off-ramp blocked all northbound lanes on State Highway 1.
The crash has since been cleared but motorists should expect delays of up to 20 minutes travelling towards the city.
Waka Kotahi NZTA advised motorists to use the Mt Wellington Highway off-ramp, and rejoin the motorway at the on-ramp.