Roadheader breaks through on Confederation Line1 December 2015
CANADA – One of the roadheaders mining the Downtown Tunnel on Ottawa’s Confederation Line completed final bench excavation in Lyon Station, it was announced on 25 November.
Mining from the West Portal to the eastern end of Lyon Station cavern is 100 per cent done, and the roadheader will to move to Parliament Station cavern this week.
Three roadheaders are mining Ottawa's 2.5km-long downtown tunnel. It is part of phase 1 of the city's light rail transit (LRT) system. This initial segment is 12.5km long with 13 stations, three underground. Most of the alignment is between 16m to 24m below ground.
The Confederation Line is being built through a public-private-partnership with the Rideau Transit Group (RTG), which will maintain the line through 2038. RTG comprises ACS Infrastructure Canada Inc., Dragados Canada, EllisDon, SNC-Lavalin, Dr. Sauer & Partners, Hatch Mott MacDonald and Thurber Engineering, among others.
Tunnelling started in late fall 2013. Construction is scheduled to complete on the Confederation Line in 2017.