Guest: Richard Warnica, staff reporter

The Francis Scott Key Bridge in Baltimore was a massive component of the port city's entire transportation network, and in a matter of moments this week, it collapsed after being struck by a container ship. The Star's Richard Warnica reports from the scene, explaining his reflections on standing next to the bridge that used to be there and just isn't any more, and the massive wreckage of the ship. It's an event that has massive implications for the city in the immediate aftermath and the longer term, and raises questions across the continent about the vulnerability of our infrastructure. It also makes us reflect on the impermanence of even the most solid features of our urban landscapes.

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