The washouts are extreme in some areas of the Trans-Canada Highway through the Fraser Canyon.
Huge sections of road, and in some cases, railway beds, have been swept away by the torrent of flood waters and landslides along Highway 1.
Some of the worst damage is near Lytton, not far from where wildfires ravaged the area last summer.
BC Transportation posted new photos Wednesday afternoon of crews working to repair the highway to Tank Hill, northeast of Lytton, where a catastrophic washout at the rail overpass will have the highway out of commission for several weeks.
Another major slide zone in the Fraser Canyon is south of Lytton, at Falls Creek.
There is no time estimate on how long it will be before the route reopens.