It was impossible last night to use any highways to drive into Metro Vancouver.
Highways 1, 3, 5, 99, and the Coquihalla were all closed due to icy conditions and/or avalanche risk.
Drive BC reported that there were "multiple vehicle incidents" along the Coquihalla.
This led to long traffic tie-ups as hundreds slept in their vehicles overnight.
The Coquihalla is expected to reopen around 10 a.m. today.
This morning, Highway 3 was reopened from Hope to Manning Park Lodge after the risk of avalanche was downgraded.
However, the avalanche risk has kept Highway 1 closed from Hope to Lytton.
Highway 5 is now open from Logan Lake to Merritt.
Meanwhile, public schools remain closed today in Chilliwack, Mission, and the Fraser-Cascade school district because of the weather.
All college and university campuses in the mainland area of southwest B.C. are open today.