A freight train caused the damage.
There will be no train service between Chicago and South Bend, Indiana, for the rest of the day. And no shuttle buses are running.
It's unclear how long it will take before South Shore trains are back in service.
No trains were running on the South Shore line Thursday. And that might ruin the plans of many holiday travelers.Commuter train service has been suspended while repairs are made to damaged tracks between Michigan City and Ogden Dunes.