In Philly, they sacrificed some of the road underneath it and narrowed the traffic lanes over the bridge to enable a very quick, albeit temporary repair. There’s no such option for a span of this length over a river — this is a decade long project that could potentially be sped up to be a years long one.

Sure, 5-10 years makes sense especially considering it took 5 years to build last time. But GP's formulation seemed to suggest a considerably longer expectation, and that's more what I was wondering about.

I took it to mean considerably longer in relation to the bridge in Philly -- which of course it will be since that overpass reopened in ~2 weeks.

I would be shocked if it was rebuilt in less than a decade. The Frederick Douglass bridge that opened recently in DC took 15 years. That’s a long time for Baltimore to be without a key piece of infrastructure.