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
The Orange Line is a rapid transit line in Chicago, Illinois, operated by the Chicago Transit Authority as part of the Chicago "L" system. It is approximately 13 miles long and runs on elevated and at
The Loop (CTA)
…circuit counterclockwise around the Outer Loop. Following the completion of a full circuit back to Tower 18, trains return to their starting points. The Orange Line enters at Tower 12 on the southeast corner, while the Pink Line and Purple Line Express enter at Tower 18 on the northwest corner; all three lines…
A Loop-bound Orange Line train approaching 35th/Archer station
A Midway-bound Orange Line train stops at Quincy
The Orange Line's terminal at Midway International Airport
A preserved 1–50 series railcar at the Fox River Trolley Museum displays a "Ford City" destination sign