Sydney Harbour Bridge lanes reopened

An accident on the Sydney Harbour Bridge approach from Milsons Point is set to cause early Monday morning traffic havoc.

(AAP)

All lanes on the Sydney Harbour Bridge have been reopened following an accident involving several cars.

At least one person was injured in the accident at 5.30am (AEDT) on Monday.

The crash had closed two of four southbound lanes and two of four northbound lanes.

Drivers have been told to expect delays and to allow additional travel time, or alternatively use the Harbour Tunnel.