Toronto Bloor–Danforth Line 2 Scarborough Subway Extension | ?m | ?s | Metrolinx

[smallspy]

The original maximum they quoted was 10 m/day, as far as I know. That line about “this year at this pace” feels like careful wording and I don’t think Michael Lindsay was trying to mislead, but I’m not convinced their numbers account properly for maintenance time.

If they quoted 10m/day - and to be honest, my recollection was that the number was 15 meters - then that is an average over the whole of the TBM's drive, not a maximum rate.

TBMs that average those kinds of speeds are absolutely capable of bursts of as much as 25m/day or more if the soil conditions are conducive to it.

Dan

 

[Coolibop]

If they quoted 10m/day - and to be honest, my recollection was that the number was 15 meters - then that is an average over the whole of the TBM's drive, not a maximum rate.

TBMs that average those kinds of speeds are absolutely capable of bursts of as much as 25m/day or more if the soil conditions are conducive to it.

Dan

Confirmed. Although removed from their site, I found an archive of a page confirming the 10-15 figure, as others have also suggested above.

The main point of the post was to continue highlighting a problem with this organization: missing deadlines, inability to acknowledge events, and obfuscation. The most recent was July, now end of year. This slippage is an ongoing problem. Let's see if Michael can keep the foot on the gas.

 

[officedweller]

They may be playing catch-up now (as best they can) to reduce (but not eliminate) delay penalties (if those exist in their contract).

 

[Westey]

The original maximum they quoted was 10-15 m/day, as far as I know. That line about “this year at this pace” feels like careful wording and I don’t think Michael Lindsay was trying to mislead, but I’m not convinced their numbers account properly for maintenance time.

I already started this:

Am I going to need to start prepping the fryer for my Jays cap? Assuming there are no more long maintenance stops, I remember there’s at least one maintenance pause near Lawrence.

For fun, continued from above, here’s where we stand from recent updates:

• Jan 2023: launch
• Sep 2023: 500 m — 2.1 m/day
• Jan 2024: 900 m — 3.3 m/day
• Sep 2024: 1,100 m — 0.8 m/day
• Jun 2025: 1,500+ m — 4+ m/day
• Jul 2025: 1,900+ m — 13+ m/day
• Aug 2025: 2,000+ m — 3+ m/day
• Sep 2025: 2,368 m — 12 m/day
• Nov 2025: 3,000 m — 10.5 m/day
• Feb 2026: 3,450+ m — 5+ m/day

Pace has accelerated at times and even exceeded the original 10 m/day target max, but to finish on the remaining schedule they’d still need to average roughly 11–12 m/day, which is above the stated 10 m/day maximum when maintenance stops/time are included.

I was surprised in 2024 there were no insiders who mentions what was actually going on. I don't even know it has been released since. Probably from March to August there was a lot going on in the background.

 

[PL1]

In other news, updates for this project on Instagram will be moving from the ScarbSubwayExt account (which will "be closing soon") to MetrolinxToronto.