Metrolinx and Infrastructure Ontario
CTSC: SNC-Lavalin, Dragados, Aecon, EllisDon JV
— December 2019
Initial and detailed inspection of underground structures. Condition assessed and rated according to the 'Highway and Rail Transit Tunnel Inspection Manual (2005)' of the U.S. Department of Transportation - FHWA.
The Crosstown LRT Project is a Light Rail Transit Line that will run along Eglinton Avenue between Mount Dennis and Kennedy Station. This 19km corridor will include a 10km underground section between Keel Street and Laird Drive. This section comprises 2 bored running tunnels; 12 stations of which 3 (Laird, Avenue and Oakwood) will be built underground using the SEM method; 12 cross passages connecting the bored running tunnels and 3 emergency exit buildings. Dr. G. Sauer & Partners performed an initial, detailed inspection of the bored running tunnels, every cross passage and every emergency exit building to establish the condition of these structures prior to takeover by CTS.
The geology comprises heavily over-consolidated hard plastic glacial till layers, stratified deposits of stiff to hard clays and dense, non-plastic, silt and sand.