Eglinton TBM Extraction Shaft, Working Down Under

  • Deep worked on and under the busy street
  • Many challenges; inconsistent soil conditions, low clearance drilling, unmovable utilities.
  • Rigorous schedule, 24 hours a day, work completed ahead of TBM breakthrough.

To say that Deep Foundations Contractors (Deep) was drilling in a confined space within an extraction shaft on the Eglinton Crosstown Light Rail Transit Project (Crosstown) would be an understatement. It was the first of many challenges the firm would overcome while working above and below the buzzing streets of Midtown Toronto, Canada. The epicenter of the action; however, was a 32.5-meter   (107 foot) deep extraction shaft where two massive Tunnel Boring Machines (TBM) would be lifted from the ground at the end of a long subterranean journey.

Learn more about this project. 

TBM Extraction Shaft at Yonge and Eglinton

Eglinton TBM Extraction Shaft

Owner: Metrolinx
Client: Aecon / Dragados JV
Foundations: $21 million