Moved from housing policies
Quote:
Originally Posted by mcj
That all being said, British Columbia has never pursued a transit project that will be as complex as building the "Purple Line", it's not a straight shot underneath (or above) a single street like the majority of the Canada Line, Broadway Extension, and SLS are. Or a project with a historical ROW like the Expo Line, or with a shared ROW with wide roadways/existing rail infrastructure like most of the Millennium line both original and Evergreen extension are.
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The project south of Second Narrows isn't especially complex. There'll need to be an 1,800m tunnel from Metrotown to Deer Lake Parkway to handle the change in elevation which has been discussed previously on the forum. And a second short tunnel (1,200m from Still Creek to Brentlawn Drive) may be necessary from the TCH past TAB considering the Millennium Line guideway is already clogging up that space. But I think there's plenty of space on the east side Willingdon for about 3km where there is a MUP, parking lots, and some grass, to accommodate an elevated guideway.
Hastings is a tougher nut to crack. If it's elevated, Hastings would need to go to five travel lanes instead of six, which may be a non-starter considering dedicated bus lanes for the BRT would likely remain even after the Purple Line to accommodate BRT to SFU. If the train needs to be buried along Hastings you're looking at 1,500m to Boundary or 2,000m to the TCH which are the likely options for heading north to Second Narrows.
(As an aside, I wonder if Skytrain could be elevated in a laneway paralleling Hastings similar to how they built some of the L in Chicago?)
Phibbs to Park Royal is another 8,500 along Main, 3rd, and Marine. Because of grade changes and density I think you're looking at tunneled at least to Keith Road, or probably Capilano Road, or maybe all the way (the tunneled section would be 5km, 7km, or 8.5km, respectively).
So overall you're looking at 20km from Metrotown to Phibbs, 12km tunneled and 8km elevated. Canada Line was 19km with 10km tunneled.
Quote:
Originally Posted by chowhou
Either way, methinks prepare for a phased construction, not unlike the Millennium Line.
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Starting with Phibbs to Metrotown?