Quote:
Originally Posted by nname
Still, it all depends.
At 1B or even 1.5B, it is still cheaper per km than Broadway Subway 
|
As a comparison, Metro Vancouver is tunneling a 6m diameter tunnel 30m under Second Narrows for water mains. The tunnel is only 1.1km and will cost about $430 million. Sure, that includes other infrastructure, but it's also connected to vertical access at either end, making actual tunnel construction flat and easy.
To do waves plan, for a train, you would need 2 tunnels, each at least 4km long, and that's just to cross Burrard Inlet, forget about the rest of the project for a second. So lets lowball and say a cost of about $300million for a 6m wide tunnel per km, and we need 2.
So that's about $2.4 billion for just a train tunnel under Burrard inlet (and that's probably at the low end of the probable cost). That's not including the rest of the line and stations.
A direct link between Vancouver and Lonsdale is going to be in the area of $3 to $4 billion, and that's to serve riders who already have a pretty sweet deal with the Seabus.
I think the only way a fixed link makes sense is if it also includes a massive upgrade on the TCH at the Second Narrows.
I think there are 2 real choices. 1st, close the Lions Gate bridge and convert it to light rail and cycling/walking only and shift vehicle traffic to an upgraded Second Narrows. The other plan is to include Skytrain over a new Second Narrows bridge (either a replacement or a twin to the existing).
They are both longer routes but as a result would serve more people who are currently very poorly served by transit today.