Cumberland is a station on the Chicago Transit Authority's 'L' system. It is situated between the Rosemont and Harlem stations on the Blue Line, which runs from O'Hare Airport to Forest Park. The station is located in the median of the Kennedy Expressway at Cumberland Avenue in the O'Hare neighborhood on Chicago's Northwest Side, and it is in close proximity to both the Norwood Park neighborhood and the city of Park Ridge. The area surrounding the station consists of mixed commercial and residential development. Nearly 1.4 million passengers boarded trains at Cumberland in 2009. The Cumberland station was first proposed in 1972 as part of an extension of the 'L' to O'Hare Airport. The station opened on February 27, 1983, along with the Harlem and Rosemont stations. The three new stations brought 6,000 new riders to the northwest CTA line in the following month, and Cumberland became especially attractive to suburban commuters. The station at Cumberland consists of a single island platform; a pedestrian overpass connects the platform to a station building to the south and an exit stairway to the north. The station also includes a bus terminal and a park and ride lot. Trains serve Cumberland 24 hours a day every day; the headway between trains is 10 minutes during peak periods, with less frequent service at other times. In addition to trains, Cumberland also serves CTA buses, Pace buses, and Greyhound buses.