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Philadelphia was just a single span long, albeit two bridges involved, for N/Sbound. I'm not personally familiar with either location, but between Google Maps and the article, this is looking like a full elevated viaduct, and more than a single deck span. On the face of it, looks like a MUCH more complex problem to replace than Philly's.

When the 35W bridge over the Mississippi collapsed in 2007 it took a year and change to replace it and they paid a premium to make it happen that fast. I don't recall there being any state of emergency declared in the twin cities though.

That was a.more complex river bridge though. And the old design was known to not be useful. Replacing with the same design will be cheaper and faster.

They rebuilt the highway but instead of making it a bridge/overpass, they just filled in underneath the highway (with glass-aggregate filler) for now.

There are longer term plans to turn it back into an overpass.

It took 43 days in Atlanta for I-85, https://en.wikipedia.org/wiki/Interstate_85_bridge_collapse?...

Also, in Philly, they filled (philled) in the area under the bridge, which may not be possible for I-10 here.