A tractor-trailer rig carrying acid blocked Highway 5 east of Raft River Bridge in Clearwater Sunday.
Two occupants of a van involved in the collision were taken to hospital, while the driver of the semi reportedly walked away.
The highway was closed from 11:30 a.m. Traffic was diverted at Little Fort and Valemount.
Agencies on scene included RCMP, BC Ambulance, Clearwater Volunteer Fire Department, Ministry of Environment, and TNRD