Faster, easier connections.
The Ontario Line in Toronto will create faster, easier connections, and make travel within Toronto more efficient. The 15.6-kilometre, 15-stop subway line will run from Exhibition Place, through the heart of downtown, and all the way to the Ontario Science Centre. It’s currently the largest subway expansion project in North America! The project involves a mix of surface, elevated, and underground tracks to limit the amount of tunnelling and excavation needed.
Metrolinx retained Thurber to provide geotechnical, hydrogeological and geo-environmental investigation services for the portals, stations, tunnels, shafts and bridges. Thurber also supervised borehole drilling up to 190 ft. downhole televiewer, as well as packer testing, PMT, PQ soil coring, collection of soil and rock samples for testing, as well as completing slug tests and environmental sampling of soil and water. Project deliverables included geotechnical data reports for various design segments. As part of the hydrogeological scope, Thurber provided third-party peer review services of hydrogeological investigations by others, estimates of construction dewatering rates, analysis and report preparation for water taking permit applications.
“Thurber’s professionalism does not go unnoticed and is very much a benefit to the OL Program” – Principal Project Manager, HDR
Thurber is currently part of the Technical Advisory Team engaged on the Don Valley Crossings (DVC) contract. The DVC covers the northern above‑grade portion of the alignment and includes major structures such as the Minton Portal support of excavation and associated slope stabilization measures, the Don Valley Crossings and West Don Crossing bridges, the Beth Nealson Drive underpass, track retaining walls, and approximately 30-meter high slopes requiring stabilization.