CTA Maintains Blue Line With Overnight Track Work

CTA Blue Line runs single track between Jackson and Racine overnight for maintenance

CTA Blue Line Cuts to One Track for Maintenance

Chicago's Blue Line will operate on a single track between Jackson and Racine stations overnight Monday, requiring all riders to board and exit on one side of platforms at three stations. The Chicago Transit Authority announced the service change to perform track maintenance between 10 p.m. March 23 and 4 a.m. March 24, 2026. Trains in both directions will share the same track, causing minor delays during the six-hour maintenance window.

Platform Changes at Three Stations

The single-track operation affects boarding procedures at LaSalle, Clinton, and UIC-Halsted stations, where all passengers must use the O'Hare-bound platform regardless of their travel direction. The CTA classified the work as planned maintenance necessary to ensure trains continue operating safely along the Blue Line. Transit officials said the temporary configuration allows crews to perform essential track work while maintaining service. The agency's ongoing maintenance program aims to preserve reliable service across the system's second-busiest rail line.

Minor Delays Expected During Work

Riders should expect minor delays as trains navigate the single-track section between Jackson and Racine, transit officials said. The maintenance work will affect Train Tracker arrival estimations during the overnight period, making real-time predictions less accurate than usual. The CTA didn't specify how many minutes of additional travel time riders should anticipate. Officials said the six-hour window provides sufficient time to complete the track work while minimizing disruption to the system's busiest service hours.

Overnight Work Minimizes Rider Impact

The maintenance window runs from 10 p.m. Monday through 4 a.m. Tuesday, targeting the period with lowest ridership on the Blue Line. Transit officials said passengers should plan for additional travel time during this period. The CTA recommends checking Train Tracker for real-time updates during the maintenance window, though estimations will be affected by the single-track operation. Normal two-track service will resume at 4 a.m. Tuesday.

What Riders Need to Know

Passengers traveling through the affected section Monday night should allow extra time and remember to use O'Hare-bound platforms at LaSalle, Clinton, and UIC-Halsted regardless of direction. The temporary boarding change applies only during the six-hour maintenance period. Moovit provides real-time Blue Line updates and alternative route suggestions for Chicago transit riders navigating service changes.