The crash involved two cars and resulted in a lane being closed between Junction 10 for Walsall and Junction 9 for Wednesbury.
National Highways: West Midlands said that Lane 3 of three was closed.
Traffic officers were on route to the scene at 6:41 when they first published information about the incident on social media.
By around 7am there was five miles of congestion on approach and around 25-40 minutes of additional travel time.
By 7:05, traffic officers had re-opened the lane, but drivers were urged to allow time for the congestion to clear and to allow extra time for their journeys.
