Rainforest
Senior Member
A portal could be built somewhere along the alignment fairly easily, it’s been discussed before that using the 401 is both unnecessary and not ideal anyway. You’d still need a portal, and the 401 lacks any significant ROW space for it compared to Sheppard anyhow.
Now for a western extension beyond Sheppard west, It might use the 401 for a bit out of necessity, terminating at Pearson via Wilson, the 401 and Kitchener corridor.
The 427 is a special exception of needing to use a highway ROW (eventually) since the only dense development is exclusively oriented around it. The 407 gets a pass because the ROW is huge and was built for transit. The 401 comparatively has low nearby density and its stuffed ROW won’t even save any money.
Let’s remember that the issue with Line 4 (if any) is that it’s length means there aren’t enough trips that can make use of it. while sending it via the 401 will make more trips possible, they won’t be easy or feel safe. No one wants to walk to the middle of a highway, MUCH less this one. So just keep it where the people are.
Not saying it's impossible to elevate the subway over Sheppard, starting the elevated section somewhere east of Vic Park. But I doubt Metrolinx will bother. Why make their job harder when they are spending borrowed money, in essence the future public debt.
Agreed that the street alignment is preferable along Sheppard, at least between Don Mills and McCowan.