Wikipedia:Sandbox

This is a list of defunct Chicago Transit Authority bus routes.

Route Name	Starting Point	Terminus	Operated	Garage	Date of Discontinuance	Reason for Discontinuance
#6 Jeffery	103rd/Stony Island	Local: Cottage Grove Green Line Express: Michigan/Wacker	Daily, early morning thru late evening	103rd	August 31, 2003	Previous #6 Jeffery split into two parts: the segment north of 67th/Jeffery became the #6 Jackson Park Express; and service south of 67th replaced by expanded service on #14 South Lake Shore Express, which was then renamed "14 Jeffery Express" to reflect new service.
#16 Lake	Harlem/Lake Green Line Terminal	Columbus/South Water	Weekdays, AM thru PM rush periods	Chicago	October 5, 1997	After a study conducted by Booz Allen Hamilton in 1997, the CTA eliminated some or all service on its least productive bus routes. The #16 was one such route. CTA suggested that former #16 riders use either #20 Madison or the Lake Street Green Line.
#23 Washington Express	Harlem/Lake Green Line Terminal	Washington/Michigan	Daily, at all times	Chicago	May 12, 1996	Route #23 existed as a two-year replacement for the Lake Street Branch of the Green Line while it was being rebuilt. When the Green Line reopened, the #23 was discontinued.
#38 Michigan Express	63rd/Stony Island or 63rd/Ashland	Washington/State	Daily, at all times	74th	May 12, 1996	Route #38 existed as a two-year replacement for the Englewood and Jackson Park branches of the Green Line while it was being rebuilt. When the Green Line reopened, the #38 was discontinued.