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Union Station Revitalization

Union Station is the premier gateway to Toronto and the busiest, most important multimodal passenger transportation hub in Canada, serving a quarter-million people daily. In order to improve the quality and capacity for pedestrians, this multi-stage revitalization project involves the construction of underground TTC platform extensions, as well as the development of new transit and pedestrian concourses.

Union Station, 55 Front Street, Toronto, Ontario

2011 to 2015

Shoring Contractor:
Belor Construction – Earthline Foundations

Services Provided

This five-year project involved the underground excavation of sections along Front St., from Bay to York Streets. We have worked closely with the General Contractor, Ellis Don, structural engineers and shoring contractor to provide solutions during various construction activities. Our role in this project included many different aspects, such as:

  • Structural finite element analysis of the TTC tunnel during different stages of excavation
  • Lateral bracing using software SAP
  • Design of temporary supports during rehabilitation of the TTC tunnel
  • Design of excavation support systems including: soldier pile and lagging, caisson wall and shotcrete with supports including tiebacks, struts, rakers and corner braces
  • Site presence during tieback stressing, column loading, flat jack loading, pre-stressing of utility supports, pre-loading of rakers and struts and general field review
  • Design of traffic decking for the intersection at Bay and Front Streets.
  • Analysis of the TTC tunnel structure overlying different loading, including mobile cranes and construction equipment loading
  • Design of utility supports including water mains, hydro duct banks, sewers, telecommunication cables and gas mains
  • Adjusting supports to suit variability of site conditions
  • Working closely with construction team to solve various difficulties during construction activities.

 ***InGeo Design was a subcontractor to temporary works engineering consulting company.

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