18-07-2025
Car fire causes congestion on M4
THE M4 is closed eastbound due to a car fire.
The closure is between J18 Tormarton Interchange (Bath, Stroud A46) and J17 Stanton St Quinton Interchange (Cirencester A429; Chippenham A350).
Wiltshire Police, Wiltshire Fire & Rescue and National Highways have units on scene.
Diversion Route according to National Highways
Road users should follow the route marked with a solid square symbol on local road signs:
Exit the M4 eastbound at J18
At the junction roundabout take the third exit on to the A46 southbound
Continue south on the A46 to the Cold Ashton roundabout with the A420
Take the first exit on to the A420 eastbound
Remain on the A420 eastbound to Chippenham
At the Bumpers Farm Roundabout with the A350 take the first exit
Follow the A350 northbound to J17 of the M4
At the junction roundabout take the third exit to re-join the M4 eastbound
