Weekday Blue Line service changes April 8 to 12

During the week the Chicago Transit Authority (CTA) will be working overnight between Montrose and Harlem which may cause some travel delays.

As a result the CTA advises that riders allow extra time in case of delays.

Boarding changes between Montrose and Harlem (O'Hare branch)

From Mon., Apr. 8, to Fri., Apr. 12 

Nightly from 10 p.m. to next day at 4 a.m. 

Board and exit on the Forest Park-bound platform at the Jefferson Park station

Trains in both direction will operate on the same track between Montrose and Harlem (O'Hare branch)

The work being done is for signal maintenance to ensure safe operations.