Tunneling

Port Mann Main No. 2

Port Mann Main No. 2

Location

Vancouver, BC

Timeline

2016

Methods

Microtunneling

Scope

Michels built a 148-metre long, 1.8-metre diameter tunnel under the Mary Hill Bypass, a major four-lane highway in the Vancouver metropolitan area, to house a 1.5-metre diameter water main.

Microtunneling proved to be an effective method for constructing a tunnel in ground conditions that ranged from sandy/silty with layers of gravel and wood debris and a high pressure water table that sits just 2 metres below the surface. Tidal influxes from the nearby ocean also presented challenges.

  • Michels built a 148-metre long, 1.8-metre diameter tunnel under the Mary Hill Bypass, a major four-lane highway in the Vancouver metropolitan area, to house a 1.5-metre diameter water main.
  • Michels built a 148-metre long, 1.8-metre diameter tunnel under the Mary Hill Bypass, a major four-lane highway in the Vancouver metropolitan area, to house a 1.5-metre diameter water main.
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