The service woes started about 9 p.m. Tuesday when an out-of-service train derailed and got stuck on the tracks just north of the Airport station. The conductor was the only person on board and was not injured.
For most of the week, buses and trains ferried passengers between the College Park and Airport stations.
READ MORE: Crane won't come until Thursday to lift derailed MARTA train at airport
Preliminary findings suggest the train, which consisted of six cars, was heading in the right direction with four cars crossing the interlocking without incident.
It appears the sixth rail car failed to follow the proper route, which resulted in the derailment of that car and the partial derailment of the fifth rail car, according to MARTA.
MARTA had urged customers to “please allow 30 additional minutes of travel time.”
It's still unclear when it will be removed,