The St. Louis Post-Dispatch reported the Saturday night derailment stranded the passengers as crews worked to disconnect the derailed car and its trailing two cars from the rest of train.
The coach car came off the tracks due to unspecified reasons as the train was leaving a downtown station at about 9 mph.
No passengers or crew on board the train were hurt in the minor derailment, the Post-Dispatch said.
Trader Joe's: Car crashes into Long Island store, injuring 11
Exploding whale video goes viral on Internet