Baltimore County became the latest jurisdiction to sue the owner and manager of the Dali, the cargo vessel that collapsed the Francis Scott Key Bridge in March, killing six construction workers.

According to the complaint filed Tuesday in the U.S. District Court of Maryland, the March 26 collision and bridge collapse were preventable, resulting in “significant” costs to the county in terms of manpower, economic losses and environmental damages, according to County Attorney James Benjamin.

The complaint names Grace Ocean Private Limited, the Dali’s Singaporean owner, and its manager, Synergy Marine Group.

The collapse of the bridge, which connected southeastern Baltimore County to South Baltimore, has inflated residents’ commute times and cut them off from a main thoroughfare, added wear and tear to county roads, and required county agencies to incur costs, including “unexpected overtime costs and wear and tear on its equipment and vehicles,” according to the 22-page complaint.

The collapse also sent “50,000 tons of debris” flying into the Patapsco River, causing potential contamination. County cleanup efforts are ongoing, and the “long-term (environmental) impacts of the collapse and of the resultant debris and other substances” are still unknown, Benjamin wrote.

On top of that, Benjamin said, the Dali’s owner and manager knew the vessel was unseaworthy but proceeded anyway to begin its journey to Sri Lanka.

“As a direct and proximate result of the petitioners’ negligence, six people died, the Port [of Baltimore] was crippled, commerce was disrupted, and the public as well as governmental organizations in the vicinity of the Key Bridge, including the county, face years of recovery and rebuilding to return to something resembling normalcy,” Benjamin wrote.

The county is seeking a “request for relief,” but does not name a specific dollar figure.

Baltimore County Executive Johnny Olszewski Jr. said his administration would “continue to prioritize” recovery efforts for impacted businesses and the families of the six victims.

“Baltimore County is taking bold action to hold the owners and operators of the Dali accountable for the tragic loss of six beloved community members, financial devastation to our local economy, damage to businesses and families, and the ravaging effect of this disaster on our waterways and environment,” Olszewski said in a statement.

Baltimore County has joined the City of Baltimore, State of Maryland, U.S. Department of Justice, the families of the six victims, small businesses and others in suing the Singaporean owner and manager of the Dali in relation to the Key Bridge collapse.

Darrell Wilson, a spokesperson for Grace Ocean and Synergy, said the county’s complaint was “anticipated.”

“The owner and manager will have no further comment on the merits of any claim at this time, but we do look forward to our day in court to set the record straight,” he said.

Tuesday was the last day interested parties could sue — although attorneys representing cargo owners have requested an extension for those who had freight aboard the vessel.

Baltimore Sun reporter Hayes Gardner contributed to this article.