Vehicle carrying old transformer gets stuck under Chennai bridge Updated: Updated: Fire breaks out during salvage operation Share Article AAA Hectic efforts: Workers trying to move the over dimension vehicle that got stuck under the Maduravoyal grade separator in Chennai on Wednesday. | Photo Credit: K. Pichumani Fire breaks out during salvage operation An over dimension vehicle (ODV) carrying an old transformer to Poonamallee from Sulurpet in Andhra Pradesh got stuck beneath the Maduravoyal grade separator on Wednesday. It remained stuck for over five hours from 8 a.m. When the staff of the private firm attempted to cut the upper portion of the transformer with a welding machine, the tap changer caught fire as there was some residual oil in the transformer.