Kwinana Freeway northbound is closed after a body was found early Thursday morning.
It is believed the body was hit by a car near the freeway flyover at Canning Highway around 5.30am.
The exact circumstances leading up to the crash is not yet known, but the man has since died as a result of his injuries.
The Kwinana Freeway northbound lanes are currently closed between Leach Highway and Canning Highway.
It is advised that motorists avoid the area and seek alternate routes.
Mandurah teacher who raped student to remain on bail
Man charged after allegedly exposing himself to girl on Transperth bus in Lakelands
Fire rips through Golden Bay home
Firefighters battle bushfire near Nambeelup
Alcoa Children's Festival cancelled due to severe weather
Man charged over crime rampage from Furnissdale to Kwinana
Damaging winds forecast for Harvey, Dwellingup, Pinjarra
Southern suburbs man claims $15 million Lotto win after eventually answering life-changing call from Lotterywest
Two women taken to hospital after Kwinana Freeway crash