Daly Overpass Bridge Replacement in Brandon, Manitoba

Presentation Overview:

Replacement of the Daly Overpass was required in Brandon, MB due to the age of the structure and traffic projections. The proposed replacement bridge consists of 3 structures, a vehicular and pedestrian bridge over Pacific Avenue and existing CPKC rail lines and an additional vehicular bridge over McDonald/Stickney Avenue. Large mechanically stabilized earth (MSE) wall faced embankments, up to 10 m in height, were constructed between the bridges and along the North approach fills to reduce the length of structural bridge spans. Bridge construction has been completed at this time. The large embankment fills created concerns during design with respect to embankment stability, settlement and also downdrag of driven steel pile foundations. To address these concerns, a detailed geotechnical investigation was completed that included: test hole drilling with laboratory testing, pressuremeter testing, seismic cone penetration testing, and downhole geophysics. With this data, finite element deformation modelling was performed to refine settlement estimates. This presentation will provide a summary of the geotechnical investigations, numerical modelling and performance monitoring of embankments during construction.

Presenter Bio:

Kent is the President and CEO of TREK Geotechnical Inc. In addition to his corporate duties, he also acts as the geotechnical design lead or reviewer on a variety of projects including the Daly Overpass. Kent has worked in the geotechnical engineering field for 26 years; he has worked on projects in Alberta, Saskatchewan, Manitoba and Ontario. He has been employed with TREK as a senior geotechnical engineer and partner since 2012. Prior to joining TREK, Kent has worked for Manitoba Hydro and other consulting firms in the prairies.