A man has been arrested following a fatal crash at Almondsbury Interchange this morning.
The crash, involving a car and motorcycle, occurred at about 6.30am.
The motorcyclist was seriously injured and died at the scene shortly afterwards.
A man has been arrested and remains in custody.
The motorway was closed while collision investigators examined the scene but has since reopened.
Police are now appealing for witnesses and would particularly like to hear from anyone who may have dash cam footage.
If you are able to help call 101 and quote the reference number 5219249942.