Two tower cranes have been installed on the north side of the Bow River for construction on the new Bow River Bridge. In 2021 these cranes will be moved to the south side of the river for the remainder of the project. The cranes are used to efficiently move materials up to the elevated work areas. The cranes were installed on concrete foundations designed and approved by a professional engineer to meet all safety standards, and once the cranes were erected they were fully inspected by the crane supplier.
When not in use, the hooks used for picking up loads are moved closer to the tower and the cranes are required to be in “weathervane” mode, which means they are free to rotate in the wind. It is unsafe for the cranes to be in a locked position when wind speeds exceed 50 km/hr, so they are set in weathervane mode in the event of unexpected high winds. Because prevailing winds in this area come from the west, the booms (crane arms) are often over Stoney Trail when not in use. These should not be of any concern to motorists as the structural integrity and safety aspects of these cranes are reviewed and inspected by appropriately qualified professionals.
When the cranes are in use, it is the contractor’s policy not to lift any loads over Stoney Trail.