No, what appear on online maps to be bridges crossing the Baltimore Harbor (i.e., I-95 and I-895) are actually bridge-tunnels. And, currently, the transport of hazardous cargo by truck or tanker truck through these tunnels is prohibited.
But you are correct, I think, with your overall assessment that this ludicrous report by Loomer is wildly overstating how dire is this situation. Trucks hauling hazardous cargo along the I-95 corridor will just have to go west of the city along I-695, the Baltimore beltway, instead of east of the city, across the now-demolished bridge. A considerably longer trip, yes, but seemingly manageable.
As for ship traffic in and out of the harbor itself, once the fallen bridge debris is cleared from the channel -- a process that should take but a few weeks at most -- business would presumably return pretty much to normal.
It may take years for the bridge to be replaced, yes, and that will present considerable difficulties for the locals in the meantime. But this is not the existential crisis that clowns like Loomer are trying to project.
“actually bridge-tunnels”
I used to commute through the Harbor Tunnel. Don’t remember the “bridge” part. [Plenty-o-short-bridges over most anything like most limited access roads.]
Lara Logan posted this, not Loomer. Logan is a highly regarded professional journalist whom I’d give far more credence to than someone on FR.
Lara Logan is listed as the writer.