In recent decades state governments (of both persuasions) have pretty much alternated between major rail and major road projects, with occasional diversions into other infrastructure projects such as the Wonthaggi desal plant and the pipeline from the Goulburn River to the Yarra.
Even if rail projects get more than the half share they have got for the past 30+ years, the projects can't all be built at once. So what priority should we give them? Here's a list of possible big rail projects in the coming decades:
1. Finish off RRL.
2. Airport train
3. Rail tunnel thingy from Kensington to South Yarra
4. Dandenong rail corridor capacity expansion with a new line from near Cranbourne to Port of Hastings
5. Rowville train (can't be built without Dandenong corridor upgrade due to limited capacity on existing tracks)
6. Melton duplication and electrification.
7. Doncaster train
8. Limited track reduplication from Kyneton to bendigo.
9. Passenger service: Geelong - ballarat - Maryborough - Castlemaine - bendigo. (Can be done in stages)
10. Upgrade line to Shepparton and possibly convert the rest of the north east to standard gauge.
11. Extend South Morang line to... Doreen?
12. Upgrade and partly duplicate the ballarat line.
13. Eliminate single track sections on mostly double track lines in the north east and Gippsland.
Any other sensible and feasible projects?
Without reducing the subject to tiresome party politics, what priority should they have and what order should they be built in?