By cphillips@thekmgroup.co.uk (Charlotte Phillips) One of the tunnels at the Dartford Crossing has been shut for emergency repairs. There is queuing traffic on the anti-clockwise carriageway due to the closure on the A282, put in place by National Highways shortly after 5pm following an incident. It is affecting the west tunnel with traffic being diverted via the eastern route. National Highways says crews are on the scene and to expect congestion in the area. It is not known when the tunnel is expected to reopen.