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Icy roads have given way to a thaw on Tuesday, which has caused problems for motorists.
Melting ice on the Second Severn Crossing began to fall onto cars driving over the bridge which led to its closure.
The bridge reopened to traffic following a meeting between the Highways Agency and England and Welsh police forces.
Earlier in the day, a power cut in Bradley Stoke meant 1,400 homes were without electricity at one point.
Hospital staff say have dealt with a rise in patients being taken to hospitals in the area because of the wintry conditions.
Second Severn Crossing from England to Wales has now reopened following an earlier closure.
The old Severn Bridge is also open, but restricted to one lane, both England and Wales-bound.
Because of the closure traffic is queuing back to the Almondsbury interchange.
On the buses, First says the following services are experiencing problems: Service 20: Buses are running, but they are diverted away from Clare Road, Bishopston. A slight diversion via Cranbrook Road & Kellaway Avenue is in place, otherwise buses are running as normal Service 40: Buses are running, but they are diverted away from Julian Road & Church Road (off the Downs). They are operating via Stoke Hill instead Service 73: Buses running on normal route although they are unable to use the Briely Furlong bus lane due to icy conditions
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