The Norwalk River Bridge became stuck in the open position after a boat crossed underneath it.
Passengers were let off at both stations and busses were provided to go between them. It was a chaotic scene as people were scrambling to get to their ultimate destinations.
Some riders told NBC Connecticut that they were on board stopped trains for two hours before they got off to transfer on to a bus.
One woman described it as a 'nightmare' situation.
Repairs to the bridge took about three hours according to MTA officials.
There's no word on the cause of the malfunction.