A wide swath of Highway 402 remains closed this morning after snowy conditions whipped across Lambton and Middlesex County yesterday afternoon. 
The closure stretches from Nauvoo Road in Watford to the 401 interchange in London.
Provincial Police say there were over 20 crashes on the 402 alone yesterday, not including collisions on secondary roads with white outs and very slippery conditions.
Drivers are reminded once again to slow down and drive according to the conditions.