Hundreds of metres of railway track laid just two years ago as part of the most expensive public transport project in Victoria's history will be ripped up and replaced over the weekend because it is damaged and has damaged the wheels of V/Line trains.

The track replacement work will require the shutdown of part of the $3.65 billion Regional Rail Link, which has been in full service for less than seven months. Eight hundred metres of rail on the tightly curved flyover between North Melbourne and Southern Cross stations will be replaced this weekend. The root…