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Baltimore bridge collapse timeline: What happened before, during and after

Baltimore's Francis Scott Key Bridge collapsed early Tuesday after a large cargo ship struck one of its support columns. Authorities were searching for six people who had been working on the bridge, but it's now a recovery mission. Norah O'Donnell, "CBS Evening News" anchor and managing editor, and Kris Van Cleave, senior transportation correspondent, report.
Read MoreBaltimore bridge collapse timeline: What happened before, during and after

Baltimore bridge collapse timeline: What happened before, during and after

Baltimore's Francis Scott Key Bridge collapsed early Tuesday after a large cargo ship struck one of its support columns. Authorities were searching for six people who had been working on the bridge, but it's now a recovery mission. Norah O'Donnell, "CBS Evening News" anchor and managing editor, and Kris Van Cleave, senior transportation correspondent, report.
Read MoreBaltimore bridge collapse timeline: What happened before, during and after