A crash involving a car and motorcycle on the Northern Motorway at the foot of the Harbour Bridge has been cleared.

NZTA said the collision was in the right, northbound lane near the Shelly Beach Rd overbridge.

NZTA said the lane was blocked with motorists advised to take care passing the crash.

The crash has been cleared, but drivers are told to expect delays until congestion has eased.

Police said the motorway unit was in attendance, however, no serious injuries had been reported.