Image shows the two tunnels.

See new drone video taking you inside Highway 401 and 409 Rail Tunnel project

There’s another vantage point on work on – and into – the new rail passage in the heart of some of the busiest highway traffic in Canada. We have some good video taken of the mighty Highway 401 and 409 Rail Tunnel project.   Take a trip into the Highway 401 and 409 Rail Tunnel project. We’ve had lots of stories on the big dig, … Continue reading See new drone video taking you inside Highway 401 and 409 Rail Tunnel project

Metrolinx launches naming contests for Eglinton Crosstown West Extension and Scarborough Subway Extension tunnel boring machines

People are getting the chance to name a trio of digging machines, as they make their way to Canada from overseas. Find out below how you can throw your name into the hat. Starting today (Oct. 19), communities along the Eglinton Crosstown West Extension and the Scarborough Subway Extension will have chance to put their mark on transit history. Metrolinx has started naming contests for … Continue reading Metrolinx launches naming contests for Eglinton Crosstown West Extension and Scarborough Subway Extension tunnel boring machines

A worker walks through a deep tunnel

See the videos – Highway 401 and 409 Rail Tunnel project completes excavation in tunnel two

Crews have reached another milestone in the new rail passage in the heart of some of the busiest highway traffic in Canada – 100 per cent excavation in tunnel two. Since March, heavy machinery has been digging through rock and debris in the second tunnel. We get the dirt on how this was done on the Highway 401 and 409 Rail Tunnel project, including new … Continue reading See the videos – Highway 401 and 409 Rail Tunnel project completes excavation in tunnel two

Large sections of debris sit near a tractor.

Final tunnel pieces removed from Crosstown’s Mt. Pleasant station area – See the images

As we continue to regularly chart the progress of the Crosstown Light Rail Transit (LRT) route across Toronto, there are a couple of fairly big recent advances to report – from tunnel pieces to an important traction power substation being energized. We’ve followed transit tunnels from the ground up. So it’s a big deal when they reach a new stage of development along Toronto’s Eglinton … Continue reading Final tunnel pieces removed from Crosstown’s Mt. Pleasant station area – See the images

Image shows the tunnel.

Twin tunnels, single bores and megabores – Local subway planners face choices on what will work best for new lines

Each new subway tunnel is as unique as its surrounding neighbourhood and geology. While six-metre, twin tunnels were once considered standard, more recent technology has made larger, single tunnels possible. This article reviews the different sizes of tunnels and the factors that go into choosing one. Let’s get out the tape measures – the really big tape measures. How big does a subway tunnel need … Continue reading Twin tunnels, single bores and megabores – Local subway planners face choices on what will work best for new lines

The cutter head of a tunnel boring machine is lifted by a large crane as construction workers look on

After years underground, giant tunnel boring machines being pulled from Crosstown depths

The tunnelling work on Toronto’s Eglinton Crosstown Light Rail Transit (LRT) was completed in 2016 by four tunnel boring machines (TBMs). The city even knew their names – Dennis, Lea, Don, and Humber. Two were already taken out. Now Dennis and Lea are being pulled out as well. Dennis and Lea – or parts of them – have seen the light of day again. After … Continue reading After years underground, giant tunnel boring machines being pulled from Crosstown depths

Come underground at the Eglinton Crosstown

The Toronto Star has an excellent look at Laird Station on the Eglinton Crosstown, one of three stations that is being mined. Take a look, and a read of Ben Spurr’s story to get a look at where only our construction teams have gone so far. https://www.thestar.com/news/gta/2018/04/29/underground-eglinton-crosstown-lrt-stations-take-shape-with-unique-mining-technique.html   Continue reading Come underground at the Eglinton Crosstown