PL1
Senior Member
I'll point out that the early 2030s (or 2459) are all compatible with "as early as 2027". The promise was a lie from the get go.
- Thread starter JasonParis
- Start date
felix123
Active Member
What is causing this delay, though?
Some of the stations are completely excavated already, like King-Bathurst. Tunnel-boring usually moves fairly quickly unless it gets stuck, as did the Line 2 extension TBM.
The only known reason for a delay seems to be the Queen connection reconfiguration, but with so much of the project moving along at a decent pace, why would that relatively small aspect delay the whole project by years, when they still have over 5 years left to complete this thing by 2031?
Some of the stations are completely excavated already, like King-Bathurst. Tunnel-boring usually moves fairly quickly unless it gets stuck, as did the Line 2 extension TBM.
The only known reason for a delay seems to be the Queen connection reconfiguration, but with so much of the project moving along at a decent pace, why would that relatively small aspect delay the whole project by years, when they still have over 5 years left to complete this thing by 2031?
JSF-1
Active Member
I wouldn't be surprised if they have encounter similar problems at Queen like they did at Eglinton when Line 5 was being built. Since that stretch of Line 1 opened at the same time in 54' it's not out of the question that design and construction decisions were repeated across all of the stations at the time. These decision could have been repeated on the University Extension and the original part of Line 2 as well since they all use the same construction method and were designed in house by the TTC. So it only makes sense to just reuse the preexisting way of doing things on the University extension and Line 2 to speed up and simplify construction (aka Institutionalized Knowledge). As well Queen is one of the oldest streets in the city so there may be a lot of undocumented things going on beneath it.
It's actually a reason I don't like how ML has outsourced every aspect of design and construction for Lines 5, 6, and the OL since it means none of the knowledge can be truly internalized by either the TTC or ML for reuse on future projects, nor does it draw upon the TTC's prexisiting knowledge about how to construct Subways and LRT's... it's not like the TTC hasn't been building and operating a subway network for 72 years....
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reinventingthewheel
Senior Member
This news piece was already shared 7 pages ago.
Keyword some. Try looking elsewhere for the weakest links, all the pieces matter.
If it seems that way is it a known reason or just speculation?
Quite different situation. OL Queen station is anchored in bedrock, Line 5 Eg station was underpinned to the existing station.
hw621
Senior Member
So look for that cracked slab!
hawc
Senior Member
Voltz
Senior Member
There's a gap of un-excavated ground between the two station structures at Queen, which I thought was planned because of the problems encountered at Eglinton.
I agree, the damage this has done will be felt for a generation.
hawc
Senior Member
nightstreak
Senior Member
The segment under Yonge Street is going to be mined after the TBM goes through. The open pits on either side are required to expand the existing Queen station and provide it vertical circulation to Line 3 and to street level. The small segment under Yonge doesn’t need to be cut and cover.
Thaboss
Active Member
Let me start of by saying that I agree.
However, ONE thing metrolinx and the province have learned is that a consistent pipline of project is needed to keep expertise within canada. So while its true that they have stupidly outsourced everything, the contracted expertise is sticking around which is good.
There's also a much better understanding of which contractors can do the work, how to maintain better relationships with contractors, and how to write better contracts to avoid litigation.
The proof will be in the pudding I guess but lessons are slowly being learned.
I will also say that outside of china. It is rare to see any major transit project be finished under budget and on time...
crs1026
Superstar
Crappy grab shot out the window of the GO train - but pretty cool to see…
- Paul
- Paul
hawc
Senior Member
That's an awesome shot to caputre!
kotsy
Senior Member
Now that's some incredible timing! Thanks for sharing.
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kotsy
Senior Member
And here it is being lowered into position. Quality not so great due to very windy conditions.
Aplus23
Active Member
are both onsite, or are we waiting for one