Two hundred people have been injured after more than 100 vehicles were involved in a series of crashes in thick fog on a bridge in Kent.
The multiple pile-up happened just after 7am on the A249 Sheppey crossing.
Six of those hurt in the collisions are said to have serious injuries.
Firefighters said they had freed five people from their vehicles on the southbound carriageway. Driver Martin Stammers said the scene was “horrendous” and described seeing cars under lorries and people lying on the floor.
He said visibility was about 10 to 20 yards when he approached the bridge.
Chief Inspector Andy Reeves said the crash was over a “protracted area” with undamaged vehicles between others which had collided.
When asked if the fog had been a factor, Mr Reeves said: “It’s too early to give a cause. The weather will be a factor.”
He said he expected the crossing to remain closed in both directions for the whole of the working day, including the evening rush hour.
The £100 million four-lane crossing, which connects the Isle of Sheppey with mainland Kent, opened in 2006 and is over 90 feet at its highest point.