State Street subway

State Street subway
Platform at Jackson/State
Overview
Status	Operational
Locale	Chicago, Illinois, United States
Termini	North/Clybourn Roosevelt
Stations	9
Service
Type	Rapid transit
System	Chicago "L"
Services	Red
Operator(s)	Chicago Transit Authority (1947–present) Chicago Rapid Transit Company (1943–1947)
Rolling stock	5000-series
Daily ridership	52,664 (weekdays, August 2024)[a]
History
Opened	October 17, 1943
Technical
Line length	4.9 mi (7.9 km)
Character	Subway
Track gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Electrification	Third rail, 600 V DC
Route map Legend North Side Main Line to Kimball, Howard, Skokie, and Linden Armitage Willow Portal North/Clybourn North Side Main Line to Loop Clark/Division Chicago Grand Chicago River State/Lake Lake Washington │ Washington Monroe │Monroe Jackson │ Jackson Library Milwaukee–Dearborn Subway Harrison Roosevelt 13th Street incline 17th Junction South Side Main Line to Ashland, Cottage Grove, and Midway Dan Ryan branch to 95th/Dan Ryan This diagram: view talk edit

The State Street subway is an underground section of the Chicago "L" system, carrying the Red Line through the Chicago Loop. The subway is 4.9 mi (7.9 km) long, running underneath Clybourn Avenue, Division Street, and State Street. Red Line trains run through the State Street subway 24/7, with trains arriving every 4 to 15 minutes. As of August 2024^[update], the subway's 9 stations serve 52,664 boardings per average weekday.^[a]

The subway's architecture is mostly in the Streamline Moderne style, and is similar to that of Chicago's second subway tunnel, the Milwaukee–Dearborn subway. Three of the subway's stations are located along a continuous platform, which is the longest subway platform in the world. The continuous platform connects Lake, Monroe, and Jackson stations, and is approximately 3,500 ft (1,100 m) long.^[2][3]

The State Street subway was constructed as part of the New Deal, and opened in 1943. It originally connected to the North Side main line at its north end and the South Side Elevated at its south end. Since 1990, it has also connected to the Dan Ryan branch at the south end. The current service pattern began in 1993, with Red Line trains running from the North Side main line through the subway to the Dan Ryan branch.

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