Project: Niagara Tunnel Boring Machine Removal (Big Becky)

Niagara Falls Tunnel Arch Form

Equipment Used:

The largest hard-rock Tunnel Boring Machine (TBM) in the world, ‘Big Becky,’ completed drilling a 14.4m (47.4ft) diameter tunnel 10.2 kilometers long under the city of Niagara Falls. The Niagara Tunnel will provide the electrical need of 160,000 homes by adding 1600 gigawatt-hours of power per year to the Sir Adam Beck Generating Station. Western has been working with the tunnelling company, Strabag Canada, to dismantle and remove the 7000 Tons of TBM equipment. The restrictions of moving large loads in the tunnel meant new and existing equipment was required to be applied in unique and uncommon arrangements. Western designed a hydraulic gantry and sliding system, which was used to remove the cutter head sections and main body of the TBM. Western’s powered hydrostatic driven trailer modules (PSTs) were on the project to move equipment from inside the tunnel out to where it could be dismantled by crane.

This monumental project was featured in a Daily Commercial News article.