A semi flipped onto its side on Highway 1 at the Sumas exit in Abbotsford on Friday afternoon.
The accident took place shortly after 2 p.m. The semi is in the curving westbound access lane onto the freeway.
Traffic is slowed, and police and fire rescue crews are on the scene.
It is not known at this time what caused the incident, or whether there are injuries.
Check abbynews.com for updates.