M4 closed in both directions following serious collision

A serious collision has resulted in the closure of the M4 motorway in both directions between Junction 12 (Theale) and Junction 13 (Chieveley).

Emergency services and National Highways Traffic Officers are currently on the scene responding to the incident.

Diversion Routes

Road users travelling westbound are advised to follow the Hollow Square diversion symbol on road signs

Exit the M4 at J12. At the roundabout take the 1st exit and join the A4.

Continue on the A4 for approx.12.5 miles, to Newbury.

At the A4/A339 roundabout use the 3rd exit and join the A339.

Follow the A339 for approx. 2.5 miles, merging with the A34.

At the Chieveley interchange use the nearside lanes for the M4 J13 roundabout.

At the J13 roundabout take the 1st exit and re-join the M4 westbound.

Road users travelling eastbound are advised to follow the Hollow Circle diversion symbol on road signs:

Leave the M4 at J13. At the Roundabout, take the 3rd exit and join the A34 Southbound towards Newbury.

At the A34 / A339 interchange, follow the A339 for approximately 2.5 miles to Newbury.

At the A339/A4 roundabout, use the 2nd exit and join the A4 London Road.

Follow the A4 for approximately 12.5 miles, at the Roundabout take the 3rd exit and rejoin the M4 eastbound.

More detail to follow