Toronto's record-breaking subway mega-tunnel is already over 4km long
Canada's widest rapid transit tunnel is quickly taking shape as part of the over $10-billion Scarborough Subway Extension (SSE), a massive undertaking that will add three stops to the TTC's Line 2 Bloor-Danforth in place of the now-shuttered Scarborough RT.The enormous subway tunnel will eventually span 7.8 kilometres between the current ...
https://www.blogto.com/city/2026/06/torontos-record-breaking-subway-tunnel-over-4km/
Canada's widest rapid transit tunnel is quickly taking shape as part of the over $10-billion Scarborough Subway Extension (SSE), a massive undertaking that will add three stops to the TTC's Line 2 Bloor-Danforth in place of the now-shuttered Scarborough RT.The enormous subway tunnel will eventually span 7.8 kilometres between the current ...
https://www.blogto.com/city/2026/06/torontos-record-breaking-subway-tunnel-over-4km/









