Metrolinx, a provincial transit agency, is preparing to call tenders for construction of The Eglinton-Scarborough Crosstown Light Rapid Transit Line (LRT). This LRT will run in 17.5km of new twin bored tunnel under Eglinton Avenue in Toronto. A contract for the first segment of tunnel, 6.75km long from Black Creek to Yonge Street, will be tendered in January 2012, with construction to begin in August 2012. The tenders for two more tunnel segments will follow later in 2012.
The LRT tunnels will be 5.75m internal diameter, bored through a highly variegated glacial till consisting of granular materials and soft clays. New EPBMs are being procured by Metrolinx from Caterpillar Tunnelling Canada Corporation. Two of these will be provided to the successful bidder(s). Metrolinx is also procuring “one pass” precast concrete tunnel liners to be provided to the tunnel contractor (s).
In addition to the bored tunnels, the tunnel contractors will be required to construct emergency egress buildings utilizing slurry wall, secant pile, and/or soldier pile and lagging support of excavation, as well as jet grouted block headwalls for the emergency egress buildings and all underground stations. The construction of all other aspects of the underground stations will be by performed by separate station contractors after completion of the bored tunnels.
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A non-mandatory Information Session for interested parties will be held on Monday November 7, 2011 at 10:00am in the North York Civic Centre Chambers, 5100 Yonge Street, Toronto.
A Request For Pre-Qualifications is tentatively scheduled to be issued on November 15, 2011. Only tunnel contractors approved through the Request for Pre-qualification process will be invited to respond to the January 2012 tender. All Transit Expansion Projects will be posted to www.MERX.com.