Completing Annacis Water Supply Tunnel drive

In the previous week tunneling process of Vancouver’s Annacis Water Supply Tunnel was completed.

Being launched from a vertical entry shaft in the City of Surrey last year, TBM Anna made its final breakthrough at the shaft in the City of Westminster after building a 2.3km tunnel.

While excavating beneath the Fraser River at depths of up to 50m was content of the Metro Vancouver project, this work is being undertaken by a consortium of Aecon and Traylor Brothers.

With the aim of withstand​ a major earthquake, the Annacis Water Suppl​y Tunnel is one of five new marine crossings in the region.

The scheduled date fo completion of this project is 2028.