Highway 3 was closed until 4:50 p.m. while Search and Rescue worked for several hours to remove the victims from the water.
The Sparwood Fire Department, B.C. Ambulance, B.C. Ministry of Transportation and Mainroad East Kootenay were also on scene during the recovery.
Both the driver of the CPR truck and semi were uninjured in the collision.
Road conditions at the time were very poor, with both directions covered in snow and ice with falling and blowing snow.
Investigations are ongoing, but speed relative to the road conditions is what early investigation reveals.
One police officer on scene reported the roads similar to that of a skating rink.