FAMILIES of construction workers killed in Baltimore's Key Bridge collapse have filed lawsuits against the shipping company as a search for justice begins, reports the London Daily Mail.

One of the devastated family members is Maria del Carmen Castellon, who lost her husband Miguel Luna in the tragic incident which saw him and five other men plunge to their deaths after the container ship lost power and slammed into the Francis Scott Key Bridge.

She appeared alongside other victims' relatives and attorneys to announce their plans to take legal action against the owner and manager of the Dali, arguing the companies acted with negligence and ignored problems on the ship before the March 26 collapse.

"That day, a wound was opened in my heart that will never heal, something I would not wish on anyone," Mrs Castellon said.

In seeking justice for her family, Mrs Castellon said, she hopes to prevent future tragedies by advocating for safer working conditions.