Bow River Pedestrian Bridge, Banff
Set over the Bow River in the town of Banff (Canada's first national park), this slender 113m long timber bridge both serves pedestrian traffic and provides a new sanitary crossing replacement.
The 80m clear span - perhaps the longest of its kind for a timber bridge - is formed from two 40m tapered haunch girders, cantilevering from either side to support a central 34m suspended span. A replaceable modular timber deck sits atop twinned Glulam beams which grow to 1.9m deep.
A proprietary tuned mass damping system was implemented to help achieve the slender 4m wide deck section and to deal with vibrations from pedestrian loading.
The historical Town of Banff, set in the beautiful Canadian Rockies, sought a new crossing which would not only be functional but enhance the stunning mountain and river setting.