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Metrolinx: Sheppard East LRT (In Design)

afransen

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Yup, the grade is probably too much to have it surface ahead of the 404. But I guess if it is a matter of getting a TBM, maybe it makes sense to rebuild the existing terminus with cut and cover and surface before Dons Mills, and build an above grade station there.
 

afransen

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I agree but my concern is that running it on the side brings it closer to residential and commercial land, and they might oppose it.
It does, but I wonder if it if less overbearing if it doesn't sit astride the roadway. I guess from a shadowing standpoint, it is better to be on the south side of the street where it would be under the shadow of mid-rises on the south side, and cast a shadow on the roadway. It's not always practical, but in an ideal world that would tend to be more acceptable. There are elevated metros with active windows that switch to opaque at programmed points in the route to help maintain privacy when it comes close to buildings. On the other hand, on a wide road (3 lanes each way), it could be that the north sidewalk wouldn't be shadowed depending on how high the guideway is elevated.

 

Toronto_Boy

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Sheppard East and West should both be the same technology as the existing section. Whether that means that E/W are subways, or they convert the existing section to something else, the line needs to be continuous the whole length.
I agree very much so. Otherwise it makes no sense having to transfer (as a passenger) from one platform to other on the same direction of travelling. I hope designers & politicians take this point very seriously.
 

TossYourJacket

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Cut and Cover tunnel :p

Also how would you route it above ground? Elevated LRT or Light Metro is reasonable, but is elevating a TR logical? I'd imagine it would be far noisier then something like the Ontario Line, and not as visually nice. Might be completely off course with the facts though.
Might as well convert the line to Metrolinx's beloved mystery Ontario Line technology if that's supposedly so much better for a subway anyway. Or do only the suburbs get full subways cus downtown doesn't have enough swing voters?
 

Haydenpoon

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1. Build the Ontario Line to Sheppard (Don Mills Station), 20+years
2. Close the Sheppard Subway
3. Build a new Sheppard Subway from Sheppard West to McCowan with the Ontario Line technology, 30+years
 

Rainforest

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1. Build the Ontario Line to Sheppard (Don Mills Station), 20+years
2. Close the Sheppard Subway
3. Build a new Sheppard Subway from Sheppard West to McCowan with the Ontario Line technology, 30+years
Using the existing Sheppard tunnel between Yonge and Don Mills.

A lighter technology makes perfect sense, but abandoning the tunnel and building a parallel guideway wouldn't make any sense at all.
 

11th

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Yup, the grade is probably too much to have it surface ahead of the 404. But I guess if it is a matter of getting a TBM, maybe it makes sense to rebuild the existing terminus with cut and cover and surface before Dons Mills, and build an above grade station there.
Then they will run into the same problem the Scarborough RT had/has. The line will have to be closed for duration of the rebuilt.
Don Mills also seems to be on top of a hill; Sheppard slopes down east and west of the station, so the incline needed to surface the line would probably be steeper as well.
They really dug themselves into a hole by not tunneling all the way to Victoria Park back then.
 

north-of-anything

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I mean, I would have it surface on one side of Victoria Park, either after Consumers or before Warden. And honestly, maybe converting it to the eventual Ontario Line technology would be a really good idea, like without irony. Would make it easier to route it to STC and/or Malvern that way... maybe even using parts of the current Line 3 configuration!
 

afransen

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Then they will run into the same problem the Scarborough RT had/has. The line will have to be closed for duration of the rebuilt.
Don Mills also seems to be on top of a hill; Sheppard slopes down east and west of the station, so the incline needed to surface the line would probably be steeper as well.
They really dug themselves into a hole by not tunneling all the way to Victoria Park back then.
I'm thinking you could minimize how long that would be. Build the new line east of Leslie and once it is close to operational, degrade the service on Sheppard somewhat by closing Don Mills and completing the connection east of Leslie to the new alignment. Maybe it would be practical to add crossover west of Leslie to allow the rest of the line to continue operating at existing frequency. Otherwise, service could continue with reduced frequency beyond Bayview using the Bayview crossover.

Perhaps the best place to surface would be just east of the Don River bridge. But, at some point it would be cheaper to launch a TBM to get under the 404. And maybe easier politically not to abandon so much of the existing tunnel, even if it is more expensive.
 

Streety McCarface

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Might as well convert the line to Metrolinx's beloved mystery Ontario Line technology if that's supposedly so much better for a subway anyway. Or do only the suburbs get full subways cus downtown doesn't have enough swing voters?
Ontario line tech is just subway tech that runs on standard gauge and with smaller car lengths (increased turning radius). There is absolutely no need for such a change on Sheppard given that it's a straight shot. You can very easily elevate TTC rolling stock and just build the stations as 4-car stations.
 

sche

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Ontario line tech is just subway tech that runs on standard gauge and with smaller car lengths (increased turning radius). There is absolutely no need for such a change on Sheppard given that it's a straight shot. You can very easily elevate TTC rolling stock and just build the stations as 4-car stations.
Wouldn't it also be possible just to get new trains that were essentially TRs with TTC gauge but shorter cars? That way you can get smaller turning radii (which could make a hypothetical STC or Malvern route easier) without reconstructing the existing Sheppard line. There's no reason to convert Sheppard to standard gauge, TTC gauge is literally like 6cm/2in wider.
 

north-of-anything

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Wouldn't it also be possible just to get new trains that were essentially TRs with TTC gauge but shorter cars? That way you can get smaller turning radii (which could make a hypothetical STC or Malvern route easier) without reconstructing the existing Sheppard line. There's no reason to convert Sheppard to standard gauge, TTC gauge is literally like 6cm/2in wider.
That would be a great solution as well, given that the Sheppard trains right now are only 4 cars long. It also would not require the current line to ever be shut down.

From what I understand, the reason why an LRT was pushed for Sheppard east of Don Mills was that it could run on the street, which isn't strictly necessary - especially on a road that isn't known for its active streetscape. Perhaps an elevated structure in the median with nimbler, OL-style trains could do the trick.
 

afransen

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The current system wouldn't have to be shut down to change the gauge. It might need reduced service in sections to enable sections of track to be worked on.
 

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