Diversion Route in Place After Crash Closes A46 Near Dyrham Park Friday, November 28, 2025 a46 crash traffic closure dyrhampark southgloucestershire nationalhighways police diversion journeyplanning A serious collision involving a car and a motorcycle has forced the closure of the A46 in both directions near Cold Ashton, just south of the Tormarton Interchange in South Gloucestershire. The crash occurred at around 4:25 … Read More