On the sixth anniversary of a deadly construction crane collapse, two slain workers’ families watched Friday as a judge declared a mistrial in their wrongful-death case because the crane owner was hospitalized from a car crash.

Opening statements had been underway for days when James Lomma’s lawyers asked Thursday to halt the trial, saying their client had been severely hurt in a wreck before jury selection concluded last week. But Manhattan Justice Manuel Mendez said Friday he felt he had no choice but to stop it.