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Survivors of a bridge collapse in Gujarat on Wednesday that killed at least 15 people have said that they initially thought it was an explosion or earthquake. The cause of the collapse is still to be ascertained, and investigations are under way according to state government officials. The 40-year-old bridge connected Vadodara district with central Gujarat and usually saw a lot of traffic. Dramatic visuals after the collapse showed a truck teetering dangerously from the edge of the broken bridge