A crash that blocked two southbound lanes on the Auckland Harbour Bridge caused lenghty delays this morning.

The crash in the southbound direction blocked lanes 1 and 2 of the bridge, NZTA said.

Delays stretched back as far as Greville Rd.

Motorists were warned to expect delays and drive with care after the crash at 8.50am.

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The crash scene was cleared and lanes were re-opened at 9.35am, NZTA said.

Meanwhile an earlier crash that had been blocking a northbound lane in the Waterview Tunnel had been cleared.

Delays were expected as congestion eased.