And yet, there are no "strategic railways" in the US - because, much like our rail network, their rail system is almost entirely privatized. And much like their interstate highway system, our highways are publicly owned. There is a parallel between the two countries.
So what exactly are you railing for, here?
Dan
"Railing for": I like that, well done.
The concept of national strategic interest or sovereignty has multiple facets; it can be digital, monetary, economic, infrastructure, etc. Checking a map, the US has multiple ways to move goods and people east-west or north-south, simply by virtue of their population distribution, either by road or rail. It doesn't necessarily have to be owned by the state, it simply has to exist. I doubt they have tight convergences like we do. Even our east-west highway network is extremely constricted in a couple of spots in northern Ontario.
Slightly off-topic, and not wanting to get into military matters, if off-shore events got to point where we we needed to move (what's left of) our heavy assets such as armour overseas, I'm not sure many, or even any of the bases where they are lodged even have rail any more. Sure, you can truck them to tidewater or fly them - one or two at a time. I'll bet most large US military bases and ports have rail. The US Army Transportation Corps still has a rail operations division but doesn't own an inch of track off its property.
I have similar concerns about things like critical data being stored in the cloud or the state of our domestically held gold reserves.
This is all way off-topic for this thread. I spent some time in disaster management so still tend to think along those lines. The basic concept of disaster/emergency management, disaster recovery, etc. is 'how do we keep doing or get back to doing that which is critically important', and 'critically important' depends on the organization. It's why hospitals, sewage plants, etc. have, or should have, back-up generators. A buddy did his career in a large tech company. Long before work-from-home was a thing, that company determined that the best way to deal with a disruption in normal business was to issue key employees with laptops and pay for their internet.
I'm not saying that the government should break the bank on this kind of stuff, but they should at least consider its implications. I will bet a pension cheque that the national interest in having all commercial rail traffic routed through Toronto when the carriers applied to close down their Ottawa Valley routes wasn't even discussed.
If you've ever read Tom Clancy (his earlier works, the latter ones were ghost-written and crap), in Red Storm Rising, the Red Army's ability to move eastern assets to the Western Europe boiled down to a single rail switch in a yard outside of Moscow.