A collision between a semi truck and trailer, a bus and several other vehicles has shut down traffic going both northbound and southbound on Highway 99 just east of the Highway 91 interchange Friday afternoon.

Surrey Police Service told CityNews that the total number of cars involved in the collision were unknown at the time.

Surrey Fire Services and BC Emergency Health Services are on scene. 

The highway is predicted to be closed for several hours as police investigate and the scene is cleaned up. 

More information is expected Friday evening or Saturday morning.