Commuters on the Forest Park branch of Chicago’s Blue Line are experiencing significantly longer travel times due to slow zones—sections of track where trains must operate at reduced speeds because of aging infrastructure. According to the Chicago Transit Authority (CTA), slow zones now cover more than 84% of the tracks on this branch, a sharp increase from 20% a decade ago. This rise contrasts markedly with the Blue Line’s O’Hare branch, where less than 15% of the tracks are classified as slow zones.
Travel times have lengthened noticeably; a trip from Forest Park to the downtown Clark and Lake Station, which took 35 minutes in 2022, now extends by five to six minutes during morning rush hours. Evening commutes have seen even greater delays, adding nine to 10 minutes on average. Riders have expressed frustration with the slower service, attributing their extended trips to the deteriorating track conditions along this 70-year-old rail corridor.
The Forest Park branch, serving Chicago’s West Side and western suburbs, operates on infrastructure originally installed when the line opened in 1958. Chief Planning and Innovation Officer Molly Poppe described the necessity for a complete track replacement, noting that the project will entail not just updating the rails and ties but also rebuilding the track bed and drainage system. The extensive upgrades will also address accessibility improvements for stations and the reopening or replacement of the long-closed Central Blue Line station in the Austin neighborhood, a requirement tied to recent state transit funding legislation.
Although the CTA has replaced some portions of track—such as a section near downtown between the LaSalle and Illinois Medical District stations—slow zones persist, partly due to ongoing construction and other factors like signal and power issues. Additional federal funding has supported upcoming work on a two-mile track stretch between the Kedzie-Homan and Pulaski stations, with construction anticipated to begin next year. However, a comprehensive timeline for the full track rebuild remains uncertain, with a preliminary projection suggesting the project might not be completed until 2040. This timeline depends heavily on securing the estimated $3 billion needed for the full scope of repairs.
Local officials and transit advocates underscore the importance of improving speeds to encourage riders to choose the train over cars. Oak Park Village President Vicki Scaman emphasized the need for efficient service to make transit competitive with driving, while Forest Park Mayor Rory Hoskins noted ongoing complaints regarding both travel times and safety. CTA acting President Nora Leerhsen acknowledged the corridor’s critical condition and highlighted frequent passenger transfers to other lines due to slow service.
Funding the project poses a central challenge. The CTA has secured $111 million in federal funds for portions of the work and received $274 million in state funds since 2019, but the full cost remains daunting. The agency is exploring multiple funding sources, including federal programs, though political factors have complicated federal transit funding. Experts caution that large projects like the Red Line Extension, which has faced cost overruns exceeding $5.7 billion, may impact the availability of funds for Forest Park improvements.
Complicating the project further is the parallel reconstruction of the aging Eisenhower Expressway by the Illinois Department of Transportation (IDOT). Both agencies are coordinating efforts through a joint office in collaboration with the Chicago Metropolitan Agency for Planning to manage construction activities along the shared corridor. IDOT officials view improved rail service as a strategy to alleviate highway congestion.
Despite this coordination, some advocates argue for more comprehensive planning to optimize outcomes. The Metropolitan Planning Council has called for designs incorporating highway caps—structures over expressways that support pedestrian and bicycle infrastructure—as part of broader corridor improvements. Such proposals could influence future station designs along the Blue Line.
As the CTA moves toward beginning design work later this year, the agency and its partners face complex logistical and financial hurdles in delivering a revitalized Forest Park branch that meets contemporary transit demands.