Submission #25 CLOSE
ARUP NORTH AMERICA LTD. (San Francisco, CA) and KASIAN ARCHITECTURE INTERIOR DESIGN AND PLANNING LTD. (Calgary)
The inspiration and approach to our design for the St. PatrickÃs bridge stems from the physical extent and relationship the Bow River has on the residents and visitors of southern Alberta. The delicate, poetic motif of ìthe curveî can be found in many activities along the banks of the Bow as well as in the eight surrounding reaches of the river. All along the
Bow undulating waves reflect the motions of skiers and fl y-fishing enthusiasts as well as the cattle roping events at the Stampede. The importance and the significance of the Bow River to both man and wildlife is undeniable. Public knowledge through education will ensure that the Bow River Basin remains vital and vibrant. Interactive, educational displays, providing real-time information about hydrology, water quality, natural ecosystems and stewardship will be installed on the banks of the Bow and on St. PatrickÃs Island.
A formal, urban plaza is located where the bridge meets the south bank of the Bow and the diagonal pedestrian street, which begins in the cultural campus, culminates to the north. This is an ideal setting for the bridgeÃs sculptural quality to be enjoyed. The inclusion of a well designed, flexible lighting system will reflect and respond to the character of any staged community events. The St. PatrickÃs Island landing is envisioned as an informal paved area for relaxation and reflection. Stepped seating gradually cascades towards an informal performance area. The natural character of the islandÃs banks is to be preserved. Where the bridge meets the north bank of the Bow, a moderately manicured rest area for pedestrians and cyclists is envisioned with views of East Village and the downtown office towers.
The proposed St. PatrickÃs Pedestrian Bridge is a steel arch bridge over the Bow River. The main span is about 94 m long over the main channel. The side span is about 53 m long above the bypass channel. A ramp structure will be constructed to provide connection between the bridge and the St.. Patrick Island.
The ramp and the two spans will be designed as arch structures. The crown heights of the arches vary between 20m and 34m. The arch ribs will crisscross with each other in midair. Such arrangement will provide adequate stability for the high arches to resist any lateral forces during construction stage and service condition.
