As it stands now and subject to weather, the 2nd track will be install in the new Fly-under tunnel 1 for West Toronto Diamond by the end of the month.
Track 3 & 4 will will be place in tunnel 2 in Dec and Jan.
In Dec & Jan, the Milton 2 lines will be relocated back to their original location at the junction and upgrade along with the 2 tracks in the corridor. CP still owns the line and not prepared to sell the lines at this time south of the junction.
The Tower mast has been erected at Union station for the UPX line. Work still underway on the new station with the roof deck in place and almost ready for enclosing it.
Tracks are being place in the Weston tunnel now with them going live in late Dec.
I noticed a few weeks ago that the tunnel roof was not the same thickness and got by answer to that question as why. They found they didn't need that thickness in the first place. The thick slab is by the school and that area will become a sport and play field for the school with the rest being a park. I also learn the floor slab was to be almost 3m thick and was reduced to 1.5m. This is the cause of the extra deepness of the tunnel.
The goal at this time to get as much trackage into service to help operation.
Once the existing platform at Weston is built or when the tunnel goes into service for the new platform, track 3 will be laid follow by 4. Hope to have 3 in service by Dec.
Only a small section of the new platform need to have concrete pour for it with more steel framing up on it.
I still say wait until Dec when the full station is to open before closing the current platform off and moving loading to the new section that will be complete next week. This will removed the need to have a walkway cross the current track 1 & 2 so the existing platform can be rebuilt. If they put in that walkway to the Railpath, I hope they have safety personnel on site to stop riders trying to cross the tracks as a train is approaching the station.