Train services were disrupted on Monday afternoon after a vehicle struck a bridge near Carnoustie.
The line was closed in both directions at around 1.15pm while engineers carried out a safety inspection.
As a result, services were starting from and terminating at Dundee.
Tickets were also being accepted on bus services between Dundee and Arbroath.
But ScotRail confirmed that services to and from the north-east were returning to normal just after 2.30pm.
UPDATE: Staff have carried out their investigations and services can now safely resume. The line has now reopened.
— ScotRail (@ScotRail) January 24, 2022
