Movement of Nilgiris Mountain Rail was also disrupted following landslip at six places on the railway track.
The train was delayed by half-an-hour, they said.
The road traffic was totally paralysed from Mettupalayam to Coonoor, following the washing away of a temporary bridge near Marappalam between Kallar and Barliar in the gushing waters.
Since the road widening work is in progress, the vehicular traffic both to and from Mettupalayam was diverted via Kotagiri, they added.
Meanwhile, a house was damaged when a tree fell on it at Ulikkal near Coonoor.