Today a large drill rig weighing 200,000lbs and standing nearly 80ft tall was delivered to the Bennett Road staging area. This drill rig will create the tunnel shaft in preparation for the micro tunnel.
Below is a video slidewhow of the drill rig being delivered to the site.
The tunnel shaft will be installed using a secant pile method to create a water tight shaft. Walls of the tunnel shaft are constructed by the sequenced construction of overlapping, reinforced concrete piles installed in a top-down process by drilling using the large rig. The secant pile operation is expected to be completed in June. The micro-tunnel will follow the completion of the tunnel shaft.
Please see below for the construction notice regarding this work.




