A small fire under an 'L' train halted downtown Blue Line service near the Rosemont Station on Friday night, a CTA spokeswoman said.
The fire under the train west of the Rosemont Station began around 9 p.m. and was put out by the Chicago Fire Department by about 9:20 p.m.
About 80 people had to get off the train, but no one was injured, said CTA spokeswoman Lambrini Lukidis. Riders on the train and others affected by the service interruption were able to ride shuttle buses to nearby stops, Lukidis said.
A man who was in a car on Interstate 190, heading for westbound I-90, when the fire began said the fire was "intense," starting with what looked like sparks from the beneath the train and then fire underneath a rail car.
Passengers soon came jumping off the train to escape the fire, but it did not appear anyone was near the area where the fire started when it began, the man said.
Following the fire, service between Rosemont and O'Hare stations was delayed, according to the CTA. The transit authority offered shuttle service between the two stations.
At 2:23 a.m. this morning, the CTA's official Twitter feed announced that the Blue Line had resumed its normal service.