Upfield line replacement buses & trains not running

Which part of the Upfield line gets replaced by buses

A closure on the main line is a different matter. Every service on this line calls at North Melbourne - all 1868 of them - so a stretch that includes it cannot be worked around, and buses have to carry everyone.

Changing to a bus at North Melbourne

North Melbourne is the junction. Every service calls there, and it is where a train can be switched off the branch and onto the direct route.

Why a closure runs all weekend, not overnight

There is almost no overnight window to work in. Across the line the last booked service of the night runs until about 02:47 and the first of the morning starts about 03:05 - 18 minutes apart.

Track work needs longer than that, which is why a closure here is usually a whole weekend or a block of days rather than a few hours after midnight, and why replacement buses tend to run for the length of it.

When trains are cancelled or not running

A cancelled service and a closed line are different things. One cancellation removes a single train and the next one still comes; a closure stops trains along a stretch and puts buses on instead.

The status above covers the second. For the first - one service cancelled, or running late - the map has every train on the line right now, with the delay on each and what riders on board are reporting.