• nisku-bridge

    Nisku Overpass Bridge Load Evaluation

  • supreme

    Supreme Crane Runway Expansion


    Bridge Load Evaluation

  • ardy-rigging

    Hagwilget Bridge

  • 107.4 Ashcroft. Right side

    CN - Ashcroft

  • CN Trestle

    CN Trestle Bridge

  • Blueberry

    Blueberry Bridge Load Evaluation

  • dscn0771

    Coast Edmonton Bridge Rehabilitation

  • 30 ave

    Edmonton 30 Avenue

Blueberry Bridge Load Evaluation


GeoMetrix was retained by Bidell Gas Compression (Bidell) to perform a bridge load evaluation for the Blueberry River Bridge (B01443) in order to transport a 250 tonne (GVW) compressor permit load on an 84 wheel trailer configuration. The existing bridge on Beatton River Road is a single lane, seven span bridge, with nine lines of a combination of Bailey truss lines on the largest mid span, and Douglas Fir stringers on the remaining spans. The deck consisted of Douglas Fir timbers.  In-depth research had to be done in order to determine the effectiveness of the non-composite timber deck bracing to laterally brace the lines of Bailey trusses. The bridge load evaluation was undertaken to determine the Live Load Capacity Factor (LLCF) for major components to determine if the PC and PS crossing of the overload vehicle was possible without strengthening of the bridge being required. The evaluation was done in accordance with S6-14 and the BC MOTI Terms of Reference. Drawings containing sufficient details to perform a bridge load rating does not exist, thus an onsite measurement of every member of the bridge had to be performed. The report was accepted by British Columbia Ministry of Transport & Infrastructure (BC MOTI) without requirements for further clarification and the first of the compressor permit load have successfully arrived at their destination.