Salvage crews worked to lift the first piece of Baltimore's collapsed Francis Scott Key Bridge from the water on Saturday in order to allow barges and tugboats to access the disaster site, Maryland and U.S. officials said, the first step in a complex effort to reopen the city's blocked port.

The steel truss bridge collapsed early on Tuesday morning, killing six road workers, when a massive container ship lost power and crashed into a support pylon. Much of the span crashed into the Patapsco River, blocking the Port of Baltimore's shipping channel.

Maryland Governor Wes Moore told a news conference that a section of the bridge's steel superstructure north of the crash site would be cut into a piece that could be lifted by crane onto a barge and brought to the nearby Tradepoint Atlantic site at Sparrows Point.