[fanoftoronto]

The transition between elevated line across the Humber River / Eglinton Flats, and the short tunneled section connecting to Mount Dennis station will go here.

I believe this tunnel is going to be mined to Mount Dennis station. Too short of a section to bore and no way to pull the TBMs out at the other side.

 

[Amare]

I believe this tunnel is going to be mined to Mount Dennis station. Too short of a section to bore and no way to pull the TBMs out at the other side.

Yup that's correct, or more technically Sequential Excavation:

Tunnelling

Learn about the methods we use to build tunnels in large and busy urban areas.

www.metrolinx.com