GENOA, Italy — All day Wednesday outside the austere building that houses Genoa’s morgue, parents, children, friends and colleagues of possible victims of a collapsed bridge entered, dreading what they might find.

William Ben Lou Lou, 42, owner of a French moving company, arrived in the morning, a day after the city’s Morandi Bridge collapsed, leaving at least 39 people dead. His daughter, scrutinizing images on social media, spotted the wreckage of one of his trucks in the rubble. Two of his workers, both Romanians, had been in the truck, moving furniture from France to Italy, but he did not know if they had survived.

“I tried to call them,” he said, “but I couldn’t reach them.”

An hour later, Mr. Lou Lou had a partial answer. He identified the body of one worker, a man with a wife and three children. Then he went with the police to the hospital, in hopes that the other man was alive. “They say my other worker may be in intensive care,” he said.