Johnson Street Bridge

Project: Johnson Street Bridge Replacement
Location: Victoria, British Columbia, Canada
Client: MMM Group

Initial bridge concept being evaluated by MMM, designed by Wilkinson Eyre Architects (UK).

In 2011, MEG Consulting Limited was contracted to MMM Group to provide geotechnical input and recommendations to the proposed Johnson Street Bridge and the adjacent pedestrian bridge located in Victoria, BC.  The project included a preliminary design of a new bascule lift bridge, which has three vehicle lanes, on-road bike lanes and a pedestrian deck on the south side of the bridge.

 

The scope of work that is to be provided by M+EG for the project considers the following:

  • Supervision of drilling, sampling (rock-coring) and in-situ testing at selected onshore and in-river locations;
  • Laboratory testing;
  • 1D site response analyses using equivalent linear program (SHAKE);
  • Analyses of rock-socketed pile foundations;
  • Determination of soil-pile kinematic interaction under seismic events;
  • Stability and settlement analyses for the proposed embankment approach.

Project Highlights:

  • Provide foundation stiffness matrix representing the set of springs for the pile foundation, as requested by MMM Group.  In addition, acceleration time-history records including the soil-pile interactions have also provided to MMM Group for structural design of the bascule pier.