In 1916 the United States had about 254,000 miles of railroad, the largest network ever built, and roughly 98 percent of intercity passenger travel moved by train. The episode rebuilds that world through small-town depots, mail cars sorting at speed, interurban lifelines, and the streamliner age, then asks how it vanished within two generations.
The peak mileage figure depends on whether route-miles, main-track miles, or total track-miles are counted, and the 1916 versus 1917 year. The 98 percent figure covers intercity travel as then measured, not all travel.



