The Department of Transport says any passengers looking to travel beyond Geelong station on the Waurn ponds service board replacement coaches to complete their journey.
Passengers travelling from Waurn Ponds and Marshall should board replacement coaches to Geelong and then the next train service towards Southern Cross to complete their journey.
Commuters are being told the disruptions could add another 30 minutes to their journey.
V/Line expects the service should return to normal by 8.30pm on Tuesday night.
Images: Geelong Broadcasters.