Billy Bishop Toronto City Airport Pedestrian Tunnel

  • Engineering design for a pedestrian tunnel 35m deep beneath Lake Ontario.
  • Construction involved the use of an innovative tunnel pre-support concept through the shale bedrock comprised of a series of seven interlocking drift bores driven by a 1.85m diameter tunnel boring machine.
  • Project strengthens connections between Toronto’s downtown and the Billy Bishop Toronto City Airport.

As lead engineer for the Billy Bishop Toronto City Airport Pedestrian Tunnel, Arup was responsible for the highly challenging design of a 185m long tunnel through shale bedrock up to 35m below the surface of Lake Ontario. The estimated cost of the overall project, including shaft construction and at-grade connections to existing structures, is approximately $80m.

The tunnel allows passengers to travel between Billy Bishop Toronto City Airport and downtown Toronto on foot, replacing the previous ferry link. 1,000 passengers per hour now can travel the tunnel.

Our scope includes tunnel design; structural, geotechnical, electrical, and mechanical engineering; project management; and acoustic, IT, communications, and security consulting.

The Billy Bishop Toronto City Airport Pedestrian Tunnel was named the 2014 Canadian Project of the Year by the Tunnel Association of Canada, as well as the 2014 Specialist Tunnelling Project of the Year by the International Tunnelling and Underground Space Association.

Share:

  • Billy Bishop Toronto City Airport Pedestrian Tunnel. Credit Arup.Open gallery

    The new pedestrian tunnel opened in July 2015.

  • Billy Bishop Toronto City Airport Pedestrian Tunnel. Credit Arup.Open gallery

    Arup brought an integrated design approach to all aspects of this challenging underwater tunnel.