Podcast – all you need to know about tunnel boring machines

Learn about the massive machines that help build new subways in the GTHA in this podcast episode

Apr 28, 2022

This week, the Metrolinx podcast team is going deep on the mechanical marvels that are tunnel boring machines (TBM).

Want to learn more about the podcast? Check out the new show landing page.

Host Matt Llewellyn speaks with Walter Trisi, director of construction for the Scarborough Subway Extension project. With Trisi’s decades of tunnelling experience on hand, the two chat about how a tunnel boring machine works, how using TBMs actually minimizes disruptions to the surface and how the Scarborough Subway Extension is making history in Ontario.

Do you have a question you’d like answered? Email the team at podcast@metrolinx.com.

Read more about the three TBMs currently in use by Metrolinx and how the public helped named them here.

A close-up of Renny, one of the Eglinton Crosstown West Extension TBMs

A close-up of Renny, one of the Eglinton Crosstown West Extension TBMs. (Matt Llewellyn photo)

Also, tunneling recently started on the Eglinton Crosstown West Extension – learn more here.

To learn more about the Scarborough Subway Extension, click here.

You can also watch how the Eglinton Crosstown LRT was tunneled below:

by James Wattie Spokesperson