A BUS breakdown has blocked a lane of the Kwinana Freeway southbound heading into the city.
A tweet from Main Roads says the right-hand lane is blocked on the Narrows Bridge near South Perth because of the breakdown.
Drivers should exercise caution when driving in the area.
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READ NOWIn the northern suburbs, the right-hand lane of the Mitchell Freeway southbound near Ocean Reef Road is also closed.
The closure is due to roadworks. Passing traffic is restricted to 60km/h.