This project bar allows selection by category or subcategory. Picking category, subcategory or keyword will filter projects immediately.

The project bar requires JavaScript, though direct links are also provided.

You may skip the project bar.

Ottawa LRT - Confederation Line Tunnel


Smith + Andersen provided electrical engineering services for the tunneling portion of the Confederation Line located in Ottawa Ontario. The overall tunnel is 12.5 kilometers in length underneath the downtown core of Ottawa. Tunnel boring machines were utilized to create the tunnel.

S + A Services Included:


Smith + Andersen provided utility coordination for three separate electrical services at three different locations along the tunnel and 15kV and 600V distribution was designed for each tunneling site. Services also involved assisting in the design and specifications of the portable underground substations, distribution for the tunneling and mining equipment (including ground fault and ground check systems for the underground equipment), and all surface equipment related to the project.

Emergency power distribution was designed for each site and surface and underground illumination was provided.


Ottawa, Ontario

Completion Year