On Friday , the train engineer tried several times to get the bridge signal to turn to green using a keypad , but it stayed red . Board chairwoman said bridge is inspected for structural problems twice a year . Engineer still waiting for all clear to go on site . Train derailment led to one car being overturned , releasing hazardous fumes . It occurred after train stop n't get green light to cross bridge , got OK from dispatcher .
Board chairwoman said bridge is inspected for structural problems twice a year . Engineer still waiting for all clear to go on site . Train derailment led to one car being overturned , releasing hazardous fumes . It occurred after train stop n't get green light to cross bridge , got OK from dispatcher .