Jan 24, 2022 – Kenneth Chan/Daily Hive

Twin tunnel boring machines (TBMs) that will be used to build the two tunnels for SkyTrain’s Millennium Line Broadway Extension are set to arrive in Vancouver sometime this spring.

Both machines are identical in size, with a width of six metres (20 ft) and a length of 100 metres (328 ft).

They are expected to dig and complete the concrete tunnel ring structure at a rate of about 18 metres (60 ft) per day, with an average depth of about 15 metres (49 ft) and a maximum depth of 20 metres (66 ft) at Broadway-City Hall Station in order to dive under the Canada Line tunnel.

Read the full article at dailyhive.com.