A time-lapse video showing the work being carried out to repair the line at Dawlish has been released by Network Rail.
A section of the track was washed away last month after severe storms. But engineers have been been working round the clock and are now ahead of schedule.
The line is expected to reopen on the 4th April, almost two weeks earlier than expected. It's thought the damage has cost the region's economy as much as £20 million a day.