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Peace Bridge is a pedestrian bridge, designed by Spanish architect Santiago Calatrava, that accommodates both pedestrians and cyclists crossing the Bow River in Calgary, Alberta, Canada. The bridge opened for use on March 24, 2012. The bridge was built by The City of Calgary to connect the southern Bow River pathway and Downtown Calgary with the northern Bow River pathway and the community of Sunnyside. This connection was designed to accommodate the increasing number of people commuting to and from work and those utilizing Calgary's pathways. The bridge is reportedly used by 6000 people a day and has ranked among the top 10 architectural projects in 2012 and among the top 10 public spaces of 2012.〔http://www.azuremagazine.com/article/2012-in-review-top-10-projects/〕〔http://www.designboom.com/architecture/designboom-2012-top-ten-public-spaces/〕 ==Design== The design follows strict requirements with no piers in the water (in an effort to minimize the ecological footprint) and restricted height (due to the vicinity of the City/Bow River Heliport). The bridge has also been designed to: * Withstand Calgary's one-in-100 year flood cycle * Meet a minimum 75 year life span * Allow barrier free access for people of all mobility types * Provide comfort and security through lighting〔http://calgary.ca/Transportation/TI/Documents/peace-bridge/peace-bridge-brochure.pdf〕 The bridge is a departure from Calatrava's previous designs, which were typically asymmetric shapes anchored by high masts. Another atypical element is the color; while most of Calatrava's designs are white, the Peace Bridge features red and white as used in both the Flag of Canada and the Flag of Calgary. ;Features: *Helical steel structure with a glass roof (850-metric-tonne steel) *A width of 6.3 metres - double the width of other pedestrian bridges in the area *Segregated bicycle and pedestrian traffic *Lighting for night time use ;Materials used: *Steel for the arches *Reinforced concrete abutments & deck ;Dimensions: *Span length: Tube Girder *Total length: Out to Out *Total width: *Total height: *Inside width: ( for pedestrian and for cycleway) 〔http://calgary.ca/Transportation/TI/Pages/Pedestrian-bridges/Peace-Bridge.aspx〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Peace Bridge (Calgary)」の詳細全文を読む スポンサード リンク
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