• 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

NSRB on Highway 60 (BF 73694 N/S) Modular Joint


Alberta Transportation retained GeoMetrix for bridge inspection, survey, preliminary engineering, detailed design, and construction services for rehabilitation of the two North Saskatchewan River Bridges on Highway 60 (BF 73694 N/S), near Devon. The primary concern that triggered the rehabilitation for the bridges was deterioration of the finger joints and deck overlay. After a thorough bridge inspection and careful study of the record drawings GeoMetrix identified the root of the fatigue problem: the rocker bearings can only accommodate horizontal movement while the finger joints are installed along 2.5% vertical grade. This finding has been confirmed with mathematical analysis and field measurements.  This incompatibility causes high fatigue stresses in the finger plates. GeoMetrix proposed a new modular deck joint system to replace the fatigued and failing finger joint, and a new Hot Rubberized Membrane and Asphalt overlay system.