#579 1886 · Southern Railway and Steamship Association member railroads · Rail transportation
A price-fixing cartel was the only body capable of switching 13,000 miles of railroad to a new gauge in a single day
the problem
Nearly 13,000 miles of Southern track ran on a different gauge than the rest of the country, and no single railroad could switch first or last without cutting itself off from every connection
background
The American South's railroads had been built to a 5-foot track gauge, while the rest of the country was converging on the narrower 4-foot-8.5-inch standard. Every freight car crossing the regional boundary had to be physically lifted off its wheels and re-fitted with a different wheel set, a permanent drag on Southern commerce that cost time and money on every shipment moving in or out of the region. The fix was obvious in principle — regauge the Southern network to match — but it created a pure coordination trap: switching gauge only pays off once your interchange partners have switched too. A railroad that moved early could no longer exchange cars with anyone still on the old gauge, and one that moved late faced the identical problem in reverse. No single railroad, however motivated, could solve this by acting alone.
The organization positioned to actually pull this off was the Southern Railway and Steamship Association, a standing cooperative of Southern railroads that existed for an entirely different, and normally welfare-reducing, purpose: fixing freight rates and dividing traffic among competitors to blunt price competition. That same standing machinery — the meetings, the trust between rival lines, the established mechanism for reaching and enforcing an industry-wide agreement — turned out to be exactly the coordination infrastructure a synchronized technical switchover required and an open, competitive market could never have delivered on its own.
what everyone would do
The available answer was to let competition and individual railroad initiative solve it — the Illinois Central and Mobile & Ohio had already switched their own Southern lines under competitive pressure through the 1880s. That approach could only ever produce a patchwork, because each railroad switching alone still faced the same coordination trap: any single line converting to standard gauge while its neighbors hadn't gained nothing and lost interchange with everyone still on the old gauge.
what they saw
The Association's members saw that the gauge problem wasn't a technical or capital problem at all — it was a pure coordination problem, and the region already had a standing body built for exactly that function, just aimed at a different (and normally harmful) purpose. The cartel's meetings, mutual trust, and capacity to set and enforce one agreement across dozens of competing railroads was infrastructure that happened to transfer perfectly to a legitimate coordination need, even though it existed to fix prices.
the move
Operating officers of the South's major railroads convened at Atlanta's Kimball House in February 1886 and, through the Association's existing coordination structure, fixed a single date for the entire regional network to convert: Monday, May 31 and Tuesday, June 1, 1886. In roughly 36 hours, crews across an estimated 11,500-13,000 miles of track pulled spikes, moved rails inward by three inches, and re-fit wheel sets on rolling stock simultaneously across dozens of competing railroads, so that when the switch happened, every line's equipment and every neighboring line's track changed together.
why it works
A synchronized gauge change only works if every connected railroad moves on the identical date, because a line that switches even one day early or late cannot exchange cars with any neighbor still on the other gauge — this is a coordination problem with no gradual or partial solution, only an all-at-once one. The Association could set that single date and get every member railroad to commit to it because the same organization already had the standing trust and enforcement mechanism it used to hold members to collusive pricing agreements — repeated interaction among the same competitors, an established venue for reaching binding industry-wide decisions, and social and reputational pressure to honor them. Once the date was fixed, each railroad's own self-interest did the rest: having already agreed and prepared for June 1, no member had reason to defect, since defecting would strand its own equipment exactly as surely as it would strand everyone else's.
the payoff
The regauging was completed within the planned two-day window with minimal disruption and no major accidents reported. A 2019 economic-history analysis of route-level freight data (Daniel Gross, published in Management Science, 2020) found the change caused a large shift in market share from steamships to railroads on affected routes, without moving total shipment volumes or prices — evidence the shift came from the coordination the cartel enabled, not from any reduction in competition.
where it breaks
This only works when a genuinely trusted, empowered coordinating body already exists among the relevant parties — building one from scratch to solve a single coordination problem is a much harder, slower undertaking than repurposing standing infrastructure. It also depends on the coordination benefit being large enough, and shared broadly enough, that all parties genuinely prefer the synchronized outcome to the status quo; a body used to enforcing collusion has no natural incentive to solve a coordination problem whose benefits accrue mainly to outsiders (customers, competitors) rather than to its own members, and the same trust structure that enables beneficial coordination can just as easily be used to entrench anticompetitive behavior in cases where no genuine coordination problem exists to justify it. Regulators and observers should expect this exact ambiguity — the same collusive machinery is capable of both — which is why the mechanism deserves scrutiny even when, as here, the outcome was demonstrably good.
what came after
The Great Gauge Change integrated the South fully into the national rail network for the first time and is cited in economic history as a rare, clean natural experiment showing that a collusive structure built for one purpose (price-fixing) can, under the right conditions, be the only available vehicle for solving a coordination problem legitimate competition cannot — a finding economists have used to complicate the simple story that collusion is always and only welfare-reducing.
references
- [1]Collusive Investments in Technological Compatibility: Lessons from U.S. Railroads in the Late 19th CenturyNational Bureau of Economic Research (Daniel P. Gross), published in Management Science 66(12), 2020, 2019nber.org
- [2]The Days They Changed the GaugeTies magazine (Southern Railway historical archive), 1966southern.railfan.net
- [3]The Great Gauge Change of 1886Discovery Park of America, 2020discoveryparkofamerica.com