Chicago opened its first elevated train 125 years ago tomorrow, on 6 June 1892:
On June 6, 1892, 125 years ago this week, the first elevated line called the "Alley L" opened for business, running from Congress Parkway and State Street to 39th Street, along the alley, behind and around buildings and through backyards, said Graham Garfield, CTA general manager of customer information and unofficial agency historian.
It was a novel way to travel — above the streets and eye-level to people's second- and third-floor windows. Garfield said some residents along the path may have forgotten that the train was coming that first day and had to quickly draw the curtains to protect their privacy, while others gathered on back porches to watch the smoky, steam-powered "L" go by.
The wooden train, run by the private Chicago and South Side Rapid Transit Railroad Co. along what is now the Green Line, was popular and crowded from the start. And along with other north, south and west sections of the "L" built over the next 10 years, it helped to both expand the city and create its character... The combined subway and elevated system now has 224.1 miles of track and sees more than a million riders daily.
The first elevated train anywhere—which still exists, to some extent—ran from London Bridge to Greenwich and opened in 1836.