BALTIMORE: Crews opened a second temporary channel on Tuesday allowing a limited amount of marine traffic to bypass the mangled wreckage of Baltimore's collapsed Francis Scott Key Bridge, which had blocked the vital port's main shipping channel since its destruction one week ago.

Work is ongoing to open a third channel that will allow larger vessels to pass through the bottleneck and restore more commercial activity, officials announced at a news conference Tuesday afternoon. The channels are open primarily to vessels involved in the cleanup effort, along with some barges and tugs that have been stuck in the Port of Baltimore.