Chicago police and fire crews responded Thursday morning to a report of a medical emergency on the tracks at the 69th Street station on the city's South Side.
First responders were able to rescue the woman. Chopper 7HD was over the scene around 8:15 a.m., when she was loaded into an ambulance.
Red Line trains started moving again between Garfield and 95th around 8:50 a.m. with residual delays.
Northbound Red Line trains were stopped again around 9 a.m. between 55th and 95th due to an interlocking-switch problem at 63rd Street.
Normal service resumed on the Red Line in both directions around 9:25 a.m. with delays.