The M6 northbound was closed after a serious collision near the junction for Warrington.

The incident occured on the Thelwall Viaduct around 1am between J19, Lymm/M56 and J20, Warrington/A57. 

Emergency services including police and paramedics from North West Ambulance Service attended the scene, and police were still working at the site of the collision until 8am when the road reopened.  

National Highways Northwest said: "The M6 northbound in Cheshire is closed between J20 Lymm Interchange (NORTH WALES, Runcorn, Birkenhead, M56; Lymm, Warrington, A50; Lymm Services) and J21 Woolston Interchange (Warrington, Irlam, A57) following a serious collision.

"North West Motorway Police Group units are at scene leading the incident response. Paramedics from North West Ambulance Service attended the scene also. National Highways traffic officers attended the incident to assist with traffic management.

"All traffic caught within the closure was released by being turned around."

Diversion route

Follow the route marked with a hollow diamond symbol on road signs):

Exit M6 at J20 and follow the slip-road to the Lymm Interchange roundabout.

At the roundabout take the first exit to the A50 Knutsford Lane.

Remain on the A50 over the junction with the A56.

At the junction with the A5061 turn right to remain on the A50.

Continue to the junction with the A57 Manchester Road and turn right.

Follow the A57 Manchester Road to the M6 J21.

Take the third exit from the junction roundabout to re-join the M6 northbound.

Road users on the M56 westbound bound for the M6 northbound should continue to J10, exit and circulate the roundabout to re-join the M56 eastbound and then exit at J9 on to the link road to J20 of the M6 Lymm Interchange and follow the above diversion route.

If this closure impacts on your planned route, please allow extra journey time. Plan ahead, you may wish to re-route or even delay your journey.