MAJOR Crash officers are investigating a fatal crash on the Kwinana Freeway north bound lanes at the Nambeelup Bridge, Stake Hill at 3.10am yesterday .
The crash occurred when a white prime mover, towing two yellow cylindrical tankers, failed to negotiate a left hand bend and entered the centre median reserve immediately prior to the Nambeelup Brook Bridge.
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It continued between the north and southbound lane carriageway, entering a deep culvert and coming to rest directly below the south bound carriageway.
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READ NOWThe 42-year-old male driver died shortly after at the scene.
Major Crash investigators are seeking witnesses who may have seen the vehicle driving in the Martin area prior to the crash.
Call Crime Stoppers on 1800 333 000 or make a report online .