One of my readers alerted me to last night’s collapse of the Francis Scott Key Bridge in Baltimore. While I’ve never walked that bridge, since the collapse of Pittsburgh’s Fern Hollow Bridge, which I have walked, the scope of my blog has expanded to highlight the fragile nature of the infrastructure we rely on daily in the United States (and across the pond). According to the reports coming in and the video of the accident, a loaded cargo liner crashed into a pier of the Francis Scott Key Bridge causing the structure to collapse. The Baltimore Sun (March 26, 2024) and Washington Post (March 26, 2024) articles are my primary sources for learning of the accident.

Unlike Pittsburgh’s disaster which was due to a deteriorated portion of the bridge finally giving way after years of deferred maintenance, no blame has yet been placed on any structural unsoundness of the Francis Scott Key Bridge.

The ship that ran into it is another story. Apparently, it recently was flagged as having questionable issues in its navigation system. The current understanding is that the ship lost power and control of steering, issued a mayday alert, and crashed into the bridge pier. In the early analysis of what happened, there are questions as to why various things were not handled differently to have prevented the collision. For example:

• Why were there not more structures in the water to deflect any ships away from the bridge pier?
• Why didn’t the tugboats continue with the ship until it cleared not just the harbor, but the bridge as well?
• Why wasn’t the bridge built with redundancies so that even if one of the piers were knocked out, the bridge could still stand?

Much like deferred maintenance (of bridges and ships), I suspect that money is at the root of the reason why not for items one and three above. It may also be a factor in why the tugboats don’t travel farther down the river with the ships.

The City of Baltimore and State of Maryland have declared a state of emergency. Pledges are being made to rebuild the bridge quickly, including President Biden promising the money to rebuild. It may be interesting to compare the rebuilding of the Francis Scott Key Bridge against Pittsburgh’s Fern Hollow Bridge. While of significantly different scales, both bridges are considered major transportation arteries that the local region cannot afford to be without any longer than absolutely necessary. Will the Francis Scott Key Bridge rebuild include similar time saving measures of purely utilitarian design and of concurrent design/build phases?