 The key bridge collapsed entirely and instantly, killing six workers who'd been fixing potholes on the bridge's road above. Hundreds of thousands of pounds of steel wreckage were now in the waterway. The Port of Baltimore, one of the nation's busiest, was forced to shut down and was not expected to reopen anytime soon. I remember that morning, March 26th, the only certainty was uncertainty. And many said it would take multiple months, some said even up to a year.