The derailment of a cargo train full of chemicals sparked a fire that burned for five days in a tunnel that runs under downtown.
The lawsuit alleges that the resulting property damage and business interruption losses and additional expenses were caused by the negligence, careless acts and omission of Baltimore City government.
The suit also blames CSX for improperly maintaining its train line.
A CSX spokeswoman has said the company plans to defend itself against lawsuits arising from the event.
Much of the city's west side was shut down as a result of the accident.
In filing suit, Trizec joins insurers for the Baltimore Orioles and Maryland Institute College of Art, which are suing the city and CSX for $1 million and $100,000, respectively.
The Baltimore City Circuit Court cases have been consolidated under the state Business and Technology Court Program.
Judge Evelyn Omega Cannon will preside over the case. No hearings have been scheduled.
Michael A. Pichini, the Goodell, DeVries, Leech & Dann lawyer representing Trizec, said the consolidated case will extend the discovery period.
``It's going to be a long, drawn-out process,'' he said.
Last month, the city brought a $10 million suit against CSX, claiming it was the train derailment that caused the water main break, which flooded streets.
CSX has claimed the water main break caused the derailment.
The city appears to be gearing up for a lengthy litigation process. It approved $100,000 in extra funds to try the case at this week's Board of Estimates meeting.
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