Quote:
Originally Posted by LeftCoaster
Since everyone seems hung up on the Burrard Tunnel how about something like this that would certainly be feasible from an engineering standpoint:

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I adjusted the arbutus line to curve when it hits downtown, the opposite curve of the expo line, and extend along georgia, hitting a few more stops before turning right and going under the inlet much closer to first narrows.
I like it a lot less but if it is truly impossible to bore down at the grade required to get below burrard inlet than it goes from being a fantasy to an impossibility. I dont want to get bogged down in plausibility but if something is actually not possible I want to adjust my map.
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If you want to alter your tunnel, why not build it from the East instead of West?
In the priority order of things, I can see East Vancouver requiring more rapid transit sooner than the North Shore. Many parts just east of the DTES are ripe for densification, with lot prices far exceeding what any rational person should want to pay to live in East Van. Soon, the only parties willing to pay the price will be developers. It might not end up being a direct extension of downtown with condo towers galore, but perhaps more like Europe. I can easily see all the SFHs in the east side replaced with low rise condo buildings and row homes in the near future. This would fuel the requirement for rapid transit down Hastings to replace the almost dozen overcrowded bus routes on the corridor.
As a fantasy, I would extend the Expo Line east down East Hastings into Burnaby (from there you could send it down Willingdon to BCIT and Metrotown or to SFU). This would fuel growth in Vancouver and Burnaby, and extend the business district into the DTES. Already Gastown is a popular location for offices, and with little room to expand office space to the West, growing the CBD to the east makes sense. Extending the Expo line will take commuters from the region on the Expo line, through downtown to these new destinations in the DTES, without an extra transfer (and the same for commuters from Hastings corridor going to Burrard or Granville).
After that is built, at around Heatley Ave you can branch the line. Tunnel under Ballantyne pier (where a station could help fuel our cruise ship industry, and get port employees to work), and north to the North Shore. The tunnel would emerge near where Low Level Road ends.
This tunnel would be shorter and shallower than a direct connection between Lonsdale and Waterfront, and allow a greater footprint for source/destination points. This would allow for a station or two to be along the new Waterfront area of the North Shore before turning up Lonsdale Ave. And because it is Skytrain with LIM technology, it can handle the steeper grades that might be required. And even though the distance traveled between Lonsdale and Waterfront is greater, the total trip would probably take less time (especially if you count transfer/wait time for trips beyond those 2 points).
The added benefit of the Branch is that it allows you to send the most trains possible through downtown while cutting the number of trains going down Hastings and the North Shore (where demand won't be as high). Travelers from the North Shore will also have more destinations to chose from, so if they work in the DTES, Gastown, CBD or Granville areas, they have a transferless ride, and never
have to make more than 1 Transfer to get anywhere else (transfer at Heatley to head east on Hastings, at Waterfront to Canada Line (or WCE), or at Commercial to Millennium/Broadway).
For an option without tunnels, a circle line could always be built (probably with LRT) that could cross using a transit dedicated Lions Gate Bridge (to extend its life and spare it from the wrecking ball), through Lower Lonsdale, and east to a new Second Narrow crossing built to incorporate light rail. From there you could head back West down Hastings providing the corridor with needed rapid transit, or SE to link with the existing Millenium line and protentially to BCIT and Metrotown. Then have separate bus and/or light rail lines on the North shore feeding this trunk line. You could also keep running a premium priced seabus line that would still be popular with tourists and people making a direct Lonsdale to Waterfront area commute.