Baltimore Bridge Latest: Experts analyze bridge construction on role for collapse

A cargo ship lost power and rammed into a major bridge in Baltimore early Tuesday, destroying the span in a matter of seconds and plunging it into the river in a terrifying collapse that could disrupt a vital shipping port for months. Six people were missing and presumed dead.

The ship's crew issued a mayday call moments before the crash took down the Francis Scott Key Bridge, enabling authorities to limit vehicle traffic on the span, Maryland's governor said. The ship struck one of the bridge's supports, causing the structure to collapse like a toy. The vessel caught fire, and thick, black smoke billowed out of it.