Dartford Tunnel CLOSED as lorry causes 'extensive damage' prompting emergency response

On 24 January 2026, a heavy lorry crashed into the Dartford Tunnel, located on the M25 between Kent and Essex, causing extensive damage to the structure’s roadway and ventilation system. National Highways confirmed the tunnel was closed and an emergency response was launched. The closure is expected to remain until later that morning, according to their statement. Thousands of drivers were trapped at the southbound lane, leading to long delays and stopped traffic in both directions. Emergency services inspected the tunnel before advising commuters to use the alternative Heathway service roads. The incident disrupted travel plans for commuters and freight vehicles on the M25 corridor.