A giant crane arrives in Baltimore, but leaders see a 'daunting' cleanup job ahead

A crane is used to clear debris from the Francis Scott Key Bridge in Baltimore on Friday. (Kevin Dietsch/Getty Images)

A massive floating crane capable of lifting 1,000 tons at once has arrived at the site of the collapsed Francis Scott Key Bridge as authorities scramble to reopen the main shipping channel to the port of Baltimore.

But even that crane can't move all of the twisted steel that's resting on the bow of the cargo ship Dali.