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First trains pass underground
through West Toronto Diamond, May 26



Update, Monday, June 9, 6:06 p.m.: Thanks to R. L. Kennedy for updating this post. You can visit his excellent website “Old Time Trains”, here.


Metrolinx contractors working at the West Toronto Diamond recently celebrated a milestone for their project.

The first GO Transit passenger train operating along the 31 Kitchener line traveled underground through the east tunnel early Monday, May 26.

At West Toronto, contractors are building two grade separations — one to separate GO tracks from the rail crossing at Junction and Old Weston Roads and one to separate GO tracks from Canadian Pacific Railway freight tracks.

Metrolinx expects to finish working on the west tunnel later this year. Crews will install the last two bridges to complete the grade separations this summer. Finishing the project is an important next step in increasing service on the Kitchener line by as much as 50 per cent as early as next year and accommodating the new Union Pearson Express, which Metrolix is launching in 2015.


Metrolinx work at the West Toronto Diamond supports two projects:


The West Toronto Diamond is south of the intersection of Davenport and Old Weston Roads and north of the complex intersection of Dupont and Annette Streets with Dundas Street West and Old Weston Road.

GO Transit trains operating along the 21 Milton and 31 Kitchener lines pass through this important junction — as do Canadian Pacific Railway freight trains along CP’s North Toronto Subdivision tracks.

R. L. Kennedy tells us that:

The Ontario and Quebec Railway built across North Toronto to the Diamond, with its first train operating from Parkdale to Peterborough May 5, 1884.

The last GO train across the Diamond was at 7 p.m. Friday, May 23, heading westbound to Georgetown. The last VIA Rail Canada train left Union Station at 5:40 p.m. for Sarnia.

The first GO train passed through the new structure at the Diamond at 6:19 a.m. Monday, May 26, heading to Union Station from Bramalea GO Station.