Lambton OPP says the westbound lanes of Highway 402 between Oil Heritage Road and Mandaumin Road have reopened.
OPP had closed the span after a number of accidents clogged the lanes starting around 4 pm.
Police say the eastbound lanes reman closed between Indian Road and Mandaumin Road for collision clean up.
Meantime the westbound lanes of the 402 between Forest Road and Oil Heritage Road is closed due to a collision.
