As part of ongoing efforts to provide better, more reliable and accessible services to all Chicago transit users, the Chicago Transit Authority recently announced the start of work associated with Forest Park Branch Rebuild – a multi-year, multi-phased investment program to reconstruct the entire Forest Park Branch of the Blue Line and make it 100% accessible to those who use mobility devices.

UIC-Halsted Blue Line StopCTA

“The Forest Park Branch of the Blue Line is a critical transit asset for Chicago’s West Side communities, directly serving the Illinois Medical District, several schools and colleges, as well as numerous other growing employment centers,” said CTA President Dorval R. Carter, Jr. “The start of this project work is long overdue, and the CTA is committed to securing the additional funding to advance future phases of work to provide all Blue Line riders a better transit experience.”

Illinois Medical District Blue Line StopCTA

Work associated with Phase I of the Forest Park Branch Rebuild is scheduled to occur beginning Sunday, July 23 through Saturday, October 7. As part of this $268 million project, crews will completely rebuild 15,000 feet or almost three miles of track between the LaSalle and Illinois Medical District (IMD) stations; demolish and begin rebuilding the Racine station to meet modern accessibility guidelines; and upgrade the traction power system for improved service reliability.

CTA Racine Blue Line Stop - Loomis EntryGoogle Maps

Opened in 1958, back when Dwight D. Eisenhower was president, the Forest Park Branch of the Blue Line has received some improvements, but after six decades of heavy use the tracks along the entire branch are beyond their useful life. This has resulted in nearly 80% of the branch being under slow zones, which cause service delays. Further, only four of the eleven stations (or 30%) along the branch are accessible to people who use wheelchairs or other mobility devices.

Phase 1A Reroute MapCTA

To reduce travel impacts to customers, project work will be performed in two parts. Part A, lasting from July 23rd through late August will see the rebuilding of the track between the UIC-Halsted and LaSalle stations. During this time, Blue Line trains will operate in two segments: 1) between O’Hare and LaSalle, and 2) between Forest Park and IMD. The Clinton, UIC-Halsted and Racine stations will be temporarily closed. Part B, lasting from late August until October 7th will rebuild the track between the IMD and UIC-Halsted stations. During this time, Blue Line trains will operate in two segments: 1) between O’Hare and UIC-Halsted, and 2) between Forest Park and IMD. The Clinton, UIC-Halsted, and IMD stations will be open for rider use.

Phase 1B Reroute MapCTA

Upon completion of track work in October, the Racine-Loomis St. auxiliary entrance only will re-open. The main entrance of the Racine station will remain closed and is expected to re-open in late-2024, at which time the Loomis St. Auxiliary entrance will close for reconstruction through 2025.

CTA Racine Blue Line StopGoogle Maps

Phase I project work is funded by a mix of state and local resources, including Rebuild Illinois, TIF and CTA Bonds. Additional funding is needed to advance future phases of the Forest Park Branch Rebuild, which in total is estimated to cost $3 billion, including Phase I work.

More detailed information regarding alternative service options will be announced and made available on the project website ( in the coming weeks.