Scenario 2 - Scrap the Green Line
The problem is that then necessitates the red line tunnel/capacity improvements decades earlier, which is likely in the $2-3 billion range now, as you identify.
There is no world where the red line tunnel does not suffer from the same contractibility problem as the green line tunnel.
Still dig the tunnel for events centre and build that station underground while the arena is under construction.
An underground station is not necessary there, unless one wants to pass the red line underground.
Elevated in the belt line would save a lot of money.
Retrofitting stations with proof of fare.
This would be a huge waste of money.
Removal of at grade crossing for Red Line to increase speed , safety and allow more ATC in the future. (Heritage Ave, James McKevitt, etc).
Heritage has been identified as the capacity point - the intersection fails pretty soon after you implement either 5 car trains or shorter headways. I'd say there are only minimal benefits for ATC on the existing system, since a big benefit is being able to build smaller stations and use lighter rolling stock. With the Green Line, when cost drivers became apparent, should have seriously examined a fully grade separated system to shrink station box volumes.
At the end of the day, the Green Line will be needed one day if the city keeps growing and costs are not going to get any better. Does it make sense to cancel it now, and then in ten years spend 10 billion, or spend 6 billion now and have it ready for the new growth rather than building retroactively?
I think its way smarter to get ahead and start building now. Especially when we've already spent a billion dollars on the project. I don't see how cancelling and losing that investment is a smart idea.
Pretty much. The trains are already ordered, (though perhaps with a development cost plus cancellation clause) we're path dependent on this one with lots of money spent. The development phase (design, optimization, and negotiation) would have to go entirely bonkers to pull the plug. When the RFP was successful enough to select a development partner, it is now mostly set.
I know it might not feel that way with how the contract is set up, as contracting with uncertainty isn't what most people are used to.
What was in the March Green Line Board progress report:
Development Phase negotiations continue with acute focus on evaluating all financial and technical options available within the Board’s mandate to address the higher than anticipated estimates from some sub-contractors.
...
While the design is being advanced, all options are being considered as risk allocations, price, and project schedule are negotiated with the Development Partners. |