The Loop is the 1.79-mile-long circuit of elevated rail that forms the hub of the Chicago "L" system in the United States. As of April 2024, the branch served 40,341 passengers on an average weekday.
A Brown Line train passes through Tower 12 as it makes the turn from Van Buren onto Wabash, while an Orange Line train waits for it to clear
Chicago Transit Authority signal tower 18 controls traffic of Purple and Brown Line trains entering from and exiting to the north, Pink and Green Line trains entering and exiting to the west, and Orange Line trains remaining in the Loop above the Wells and Lake street intersection.
A Brown Line train departing from Madison/Wabash; the station was eventually demolished and replaced with Washington/Wabash
Northward view from the Adams/Wabash station at night
Madison/Wabash was a station of the Chicago "L" rapid transit system. It served the CTA's Brown, Green, Orange, Pink, and Purple Lines. From 1919 to 1963, it also served interurban trains of the North
Station house during its final week of service
Madison/Wabash station in August 2001