CRS Tunnelling was selected subcontractor to work with Dufferin Construction on a Ministry of Transportation Project in the City of Barrie, Ontario, Canada.
The project involved the construction of a tunnel under Hwy. 400 installed by pipe jacking methods to install the RCP product pipe.
• Construction adjacent to a watercourse containing protected aquatic species
• Protective soil erosion and sedimentation control measures to prevent impact
• Tunnelling occurred beneath a major expressway
• Limited cover over the crown of the tunnel
• Complex traffic control and staging plans
• Experienced tunneling expertise required to ensure correct levels of face support
• 720 Series II TBM and Tunnel Boring System
• Closed face cutter head to prevent subsidence
• Successful installation with no settlement of the roadway surfaces or impeded traffic
