A westbound lane on State Highway 76/Christchurch Southern Motorway has reopened following a serious crash this afternoon.

The crash caused major delays for traffic during rush hour. While the road is now fully reopened, motorists are urged to drive with care through the area.

5:50pm

Traffic delays can be expected after a serious vehicle crash on State Highway 76/Christchurch Southern Motorway.

Emergency services are working at the crash site and the motorway is partially closed to westbound traffic after the Barrington Street onramp. 

Road users should plan their journeys accordingly and allow extra time for travel.

An update will be provided when the road status changes.