Canadian National won’t fight UP-NS merger under new deal
Supply Chain Dive · Jul 27, 2026
The deal would provide Canadian National with access to shipper sites that would face reduced Class I railroad offerings, pending STB approval.
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What this moves
Context or analysis — nothing has stopped moving.
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The corridor
Chicago rail interchange
Domestic corridorUS MidwestThe largest rail interchange in North America and the point where eastern and western Class I railroads hand freight to each other. Almost every transcontinental intermodal move touches it, which makes it the country's single most consequential inland bottleneck.
- Interchange between railroads, not line-haul capacity, is the binding constraint. Congestion shows up as terminal dwell hours long before it shows up in transit times.
- Winter operating conditions cut effective throughput on a predictable seasonal cycle, independent of demand.
- Because it is a handoff point, a service problem on one railroad becomes a network problem for all of them within days.
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