Bridge collapse: Temporary channel opens for boats working on response

Fourteen hours after the bridge collapse, crews are still desperately looking for the six people who remain unaccounted for, Maryland Gov. Wes Moore said at a news conference Tuesday afternoon.

"This is very much still a search and rescue mission," Moore said.

"We had the opportunity to spend time with the families. Had the opportunity to pray with them and pray for them," Moore said. "And the strength of these families is absolutely remarkable."

"We are hopeful and we are with the families," Sen. Ben Cardin, D-Md., said.

"This is no ordinary bridge -- this is one of the cathedrals of American infrastructure. It has been part of the skyline of this region for longer than many of us have been alive," Transportation Secretary Pete Buttigieg said. “So the path to normalcy will not be easy, will not be quick, will not be inexpensive. But we will rebuild together."

Buttigieg did not give an estimate of how long it may take to resume vessel traffic into and out of the Port of Baltimore.

4:16

Buttigieg discusses ongoing operations after Maryland bridge collapse

Transportation Secretary Pete Buttigieg discussed the support that will be coming from the federal government and stressed the importance of rebuilding the bridge as soon as possible.

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Transportation Secretary Pete Buttigieg traveled to the scene of the Baltimore bridge collapse, at the invitation of Maryland Gov. Wes Moore, according to the Department of Transportation.

Buttigieg posted a photo of him meeting with responders.

An estimated 30,000 vehicles crossed the bridge per day, according to the Maryland Transportation Authority.

Personnel on the ship alerted the Maryland Department of Transportation that they lost control of the vessel, and officials were able to close the bridge before it was struck, "which undoubtedly saved lives," President Joe Biden told reporters.

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Biden gives remarks on Baltimore bridge collapse

A cargo ship crashed into the Francis Scott Key Bridge in the Baltimore harbor early Tuesday morning, leading to a near-total collapse of the span.

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It appears the crash was a "terrible accident," Biden said.

He said the search and rescue operation is the top priority.

"Ship traffic and the Port of Baltimore has been suspended until further notice. And we'll need to clear that channel before the ship traffic can resume," he said.

"It's my intention that the federal government will pay for the entire cost of reconstruction. ... I expect the Congress to support my effort," Biden said.

"This is going to take some time," the president said, adding, "We're not leaving until this job gets done."

Biden, who noted he’s been over the bridge many times, said he plans to visit Baltimore as soon as possible.

"Our prayers are with everyone involved in this terrible accident and all the families, especially those waiting for news of their loved one right now," the president said. "To the people of Baltimore, I want to say: We're with you. We're going to stay with you, as long as it takes."

Maryland transportation officials reviewed traffic cameras and confirmed there were "no vehicles transiting the bridge at the time of the incident," according to the latest internal Department of Homeland Security briefing obtained by ABC News.

The local pilot who was at the controls is “undergoing post-accident Drug and Alcohol Testing,” the briefing said.

The cargo ship "remains impaled in the bridge," the document said. "Several shipping containers with unknown cargo fell into water. There is hull damage above the water line to the vessel and the ship is maintaining watertight integrity."

A slight sheen of pollution was observed in the water, suggesting there could be some oil or other pollutant “in the vicinity of the ship and pollution booms have been requested,” the memo said.

-ABC News' Josh Margolin and Aaron Katersky