The way the state budget has been framed in terms of transport was almost inevitable: the East-West motorway (stage 1) vs the Metro Rail Tunnel, with the motorway winning this round.
While they are quite different projects, serving (mostly) different markets and (attempting to be) solving different problems, I thought it might be interesting to look at them side-by-side them, based on known facts and some slightly shaky estimates, and using some doubtful metrics to compare.
|Project||Metro rail tunnel||East-west motorway tunnel (stage 1)|
|Where||South Kensington to South Yarra||Clifton Hill to Flemington|
|Estimated cost||$5-9 billion||$6-8 billion [cite]|
|Length||9 km [cite]||8 km [cite]|
|Cost per km||$0.56 – 1 billion per km||$0.75 – 1 billion per km|
|Theoretical capacity per hour||30 trains
x 1000 people per train
x 2 directions
= 60,000 [cite]
x 2000 vehicles per hour
x 1.2 people per vehicle
x 2 directions
(or some capacity for freight)
|Approx cost per person capacity per hour||$83,000 – $150,000 per person||$416,000 – $555,000 per person|
|Stations/interchanges||Arden (North Melbourne)
(Unfortunately it appears the tunnel will not include an interchange station at South Yarra.)
Flemington Road citybound
|Main trips/destinations served
(excluding future extensions)
St Kilda Road
Tram connections to inner suburbs
|Between Eastlink/Eastern freeway corridors and:
CBD and University/hospital precinct via Flemington Road
|Construction funding||Zilch so far, only planning money
|$0.293 billion from the state government
(about 4% of total cost, though it’s suspected some of this is planning money)
As I said, they are different projects serving different markets, and probably shouldn’t be directly compared like this. But there are some points to be made by doing so.
For both, reaching the theoretical capacity depends on removing other bottlenecks, and making sure feeder routes (whether PT or road) are completely optimised. But if you can do it, even the huge cost of underground rail is still many many times cheaper for the capacity brought than underground roads.
The government is talking of the road in terms of “city-shaping”. The problem is it’s city-shaping towards more car dependence, with all its problems and inefficiencies. As some have pointed out, the Eastern Freeway already gets clogged in the Box Hill area — inducing more traffic (motorists heading west from Clifton Hill) is not going to help this; nor is it going to help motorists heading south down Hoddle Street towards the inner-city.
If they were serious about ensuring the efficient movement of the city’s growing population, they’d be investing heavily in the most efficient mode, and helping more people get around more often leaving the car at home (or even ditching one of the cars in their household).
That would be city-shaping, in a good way.
- Marcus Wong recently wrote up an excellent summary of what’s known about the Metro rail tunnel
9am: updated with higher $9b rail tunnel cost estimate.