Very slow traffic and one lane blocked due to broken down car on M5 Southbound between J14 B4509 (Thornbury / Falfield) and J15 M4 (Almondsbury Interchange).
Lane three is blocked.
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The car got stuck in the rails on Museum Street where the heritage steam train experience runs - it was not in service at the time.
Polling stations will be open from 7am to 10pm on Thursday.
English Heritage asked people to send in their pictures to mark 100 years of public ownership of the prehistoric monument.