The Chicago "L" is the rapid transit system serving the city of Chicago and some of its surrounding suburbs in the U.S. state of Illinois. Operated by the Chicago Transit Authority (CTA), it is the fourth-largest rapid transit system in the United States in terms of total route length, at 102.8 miles (165.4 km) long as of 2014, and the third-busiest rapid transit system in the United States, after the New York City Subway and Washington Metro. In 2016, the "L" had 1,492 rail cars, eight different routes, and 145 train stations. In 2022, the system had 103,524,900 rides, or about 367,000 per weekday in the second quarter of 2023.
The Blue Line is a 26.93-mile-long (43.34 km) Chicago "L" line which extends through The Loop from O'Hare International Airport at the far northwest end of the city, through downtown via the Milwaukee–Dearborn subway and across the West Side to its southwest end at Forest Park, with a total of 33 stations. At about 27 miles, it is the longest line on the Chicago "L" system and second busiest, and one of the longest local subway/elevated lines in the world. It has an average of 64,978 passengers boarding each weekday in 2022.
The Green Line is a rapid transit line in Chicago, Illinois, operated by the Chicago Transit Authority (CTA) as part of the Chicago "L" system. It is the only completely elevated route in the "L" system. All other routes may have various combinations of elevated, subway, street level, or freeway median sections.
The Chicago Central Area Transit Plan, generally referred to as the Chicago Central Area Transit Project (CCATP) in the 1970s, was an extensive study of the rapid transit system in downtown Chicago; the study had begun in 1965.
Clark/Lake is an 'L' station located at 100/124 West Lake Street in Chicago's Loop district, and is accessed from the James R. Thompson Center and 203 North LaSalle building. It is one of the most complex stations on the 'L' system, comprising an elevated station and a subway station. The elevated station is serviced by the Brown, Green, Orange, Pink, and Purple Lines, while the subway platform is serviced by the Blue Line. In December 2014, it had an average of 17,644 weekday passenger entrances, making it the second busiest station in the 'L' system. The Richard J. Daley Center, Chicago City Hall, and Chicago Title and Trust Center are also served by the station. It is the busiest station on the Loop Elevated, and the second-busiest station on the 'L' system as of December 2014. This station had been recognized as the station(s) with the most pickpockets by ABC 7 Chicago in 2018.
Randolph/Wabash was an elevated 'L' station in the Loop in Chicago. Located at Randolph Street and Wabash Avenue, it served trains running on the Chicago Transit Authority's Brown and Green Lines on the outer loop track, and the Green, Orange, Pink, and Purple Lines on the inner loop track. Randolph/Wabash was the closest 'L' station to Metra's Millennium Station until its closure on September 3, 2017. The station was later demolished.
The Loop is the 1.79-mile (2.88 km) long circuit of elevated rail that forms the hub of the Chicago "L" system in the United States. As of 2022, the branch served 31,893 passengers every weekday. The Loop is so named because the elevated tracks loop around a rectangle formed by Lake Street, Wabash Avenue (east), Van Buren Street (south), and Wells Street (west). The railway loop has given its name to Chicago's downtown, which is also known as the Loop.
The Northwestern Elevated Railroad was the last of the privately constructed rapid transit lines to be built in Chicago. The line ran from the Loop in downtown Chicago north to Wilson Avenue in Chicago's Uptown neighborhood with a branch to Ravenswood and Albany Park that left the main line at Clark Street. The Ravenswood line is now operated as the Brown Line, while the Main Line is used by the Purple and Red Lines.
The Metropolitan main line was a rapid transit line of the Chicago "L" system from 1895 to 1958. It ran west from downtown to a junction at Marshfield station. At this point the Garfield Park branch continued westward, while the Douglas Park branch turned south, and the Logan Square branch turned north with the Humboldt Park branch branching from it. In addition to serving the Chicago "L", its tracks and those of the Garfield Park branch also carried the Chicago Aurora and Elgin Railroad, an interurban that served Chicago's western suburbs, between 1905 and 1953.
The Lake Street Elevated, also known as the Lake branch, is a 8.75 mi (14.08 km) long branch of the Chicago "L" which is located west of the Chicago Loop and serves the Green Line for its entire length, as well as the Pink Line east of Ashland Avenue. As of February 2013, the branch serves an average of 27,217 passengers each weekday. It serves the Near West Side, East Garfield Park, West Garfield Park, and Austin neighborhoods of Chicago, as well as the suburbs Oak Park and Forest Park. It owes its name to Lake Street, the street that the branch overlooks for 6.25 mi (10.06 km) before continuing its route straight west, adjacent to South Boulevard, towards the terminus at Harlem/Lake.
The Garfield Park Branch was a rapid transit line which was part of the Chicago "L" system from 1895 to 1958. The branch served Chicago's Near West Side, East Garfield Park, West Garfield Park, and Austin neighborhoods, and the suburbs of Oak Park, and Forest Park, and consisted of twenty-two stations. It opened on June 19, 1895 and closed on June 22, 1958, when it was replaced by the Congress branch of the Blue Line.
The Franklin Street Terminal was a rapid transit station on the Chicago "L" that was the eastern terminus of the Metropolitan West Side Elevated Railroad from 1895 to 1897. The Metropolitan had intended to construct its eastern end at Fifth Avenue, a block east of Franklin Street, but right-of-way acquisition costs had proven prohibitive so it settled on Franklin Street to house its terminal and offices. Rather than demolish the buildings on the site, the company opted to gut their second and third floors and run its tracks through them.
The Lake Street Transfer station was a rapid transit station on the Chicago "L", serving as a transfer station between its Lake Street Elevated Railroad and the Logan Square branch of its Metropolitan West Side Elevated Railroad. Located where the Logan Square branch crossed over the Lake Street Elevated, it was in service from 1913 to 1951, when it was rendered obsolete by the opening of the Dearborn Street subway.
The Randolph Street Branch and Cuyler Avenue Shuttle were two different incarnations of a rapid transit line operated in and around Oak Park, Illinois, a suburb of Chicago, by the Lake Street Elevated intermittently between 1899 and 1912. The Randolph Street Branch served as the line's westward extension to Wisconsin Avenue from Lombard Avenue, whereas the Cuyler Avenue Shuttle was intended to serve the Harlem Race Track. Local opposition resulted in the lines being discontinued.
Marshfield was a rapid transit station on the Chicago "L" in service between 1895 and 1954. Constructed by the Metropolitan West Side Elevated Railroad, it was the westernmost station of the Metropolitan's main line, which then diverged into three branches. Marshfield was also served by the Chicago Aurora and Elgin Railroad (CA&E), an interurban, between 1905 and 1953.
Canal was a rapid transit station located on the Metropolitan main line of the Chicago "L" that was in service from 1895 to 1958, when the entire main line was replaced by the Congress Line located in the median of the nearby Eisenhower Expressway. Starting in 1927, the interurban Chicago Aurora and Elgin Railroad (CA&E) also served the station, continuing until 1953. The station connected with Chicago's Union Station, which was one of the city's rail terminals. One of the busiest stations on the Metropolitan's routes, and of the "L" in general, it opened a second entrance on Clinton Street in 1914.
Chicago was a rapid transit station on the Logan Square branch of the Chicago "L", one of the several branches of the Metropolitan West Side Elevated Railroad, between 1895 and 1951. Located on Chicago Avenue, the station was constructed by the Metropolitan in the early 1890s and began service on May 6, 1895.
Grand was a rapid transit station on the Chicago "L"'s Logan Square branch, one of the several branches of the Metropolitan West Side Elevated Railroad. Located on Grand Avenue, the station was constructed by the Metropolitan in the early 1890s and began service on May 6, 1895.
In the first half of the 20th century, the four companies of the Chicago "L" and their successors each ran a terminal in Chicago's downtown in addition to the looping elevated trackage known as "the Loop" shared between all four of them. These terminals were the Congress Terminal of the South Side Elevated Railroad, the Market Street Terminal of the Lake Street Elevated, the eventual Wells Street Terminal of the Metropolitan West Side Elevated Railroad, and the North Water Terminal of the Northwestern Elevated Railroad. The Lake Street uniquely had an intermediate station on Randolph Street between its stub terminal and main line.
