Floods have caused a wall to collapse on the West Coast Mainline at Caldew Maltings, near Carlisle.
A pylon carrying overhead cables has also become unstable.
All rail services north of Carlisle are currently suspended because of flooding.
More top news
More than £60,000 has been raised to help a Dumfries and Galloway charity save children's lives in Syria.
Police are appealing for information after a 53-year-old man was assaulted in Dumfries on Saturday 23 June.
High pressure continues to bring warm and sunny weather.