River Crossing Cover Investigation

Calgary, AB

ISL was engaged by the City of Calgary's Water Resources department to provide planning, design, construction administration and inspection services for a number of condition assessments of the City's water and sanitary infrastructure crossings located underneath the Bow River and the Elbow River

Phased Approach

To help the City prioritize the work, ISL developed a flexible methodology, divided the overall project into three phases and utilized risk assessment criteria.


To ensure maximum effectiveness during in-stream construction windows, constructability issues were considered during the preliminary design stage and details regarding constructibility and staging will be provided to the various regulatory agencies to help expedite the approval process when the time comes.

Disaster Recovery

The results of this investigation will be used to obtain funding from the Province of Alberta for mitigation work under the Disaster Recovery Program.

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