Pathway and Peace Pedestrian Bridges over Bow River in Calgary, AB

Pathway: (Satellite)

Peace: (Satellite, 9,837 photos)

While looking for the "Pathway" bridge in this post, I noticed that this town has a lot of pedestrian bridges over the Bow River! The Peace Bridge struck me as extra special.

Tanweer Malik posted three photos with the comment: "An interesting and good-looking double-deck bridge over Bow River in Calgary. The upper deck carries Light Rail Transit. The lower deck is for pedestrians. The lower deck passes through a large hole in each pier where it rests on bearings. But the lower deck is also supported by tension hangers connected to the upper deck."

Kyle Ack: This is a very unique bridge, basically an upside down structural system. main structural component of the span is a hollow cast box girder that is at the same elevation as the trackbed and rests between the inbound and outbound tracks. This is unconventional and was done to reduce the overall elevation change as the trackbed crosses the river

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Maybe this is unusual for concrete girder bridges, but it is very common for steel girder bridges.

Tanweer Malik commented on Kyle's comment
I found this online. The diagram explains the deck system.

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Peace Bridge

 Asset Reconnaissance International, Jul 2021

Tanweer Malik posted five photos with the comment: "Peace Bridge - a landmark pedestrian bridge over the Bow River in Calgary. A plaque for this bridge describes the steel structure as a "sculptural, mathematically derived form". Then it quotes the designer Santiago Calatrava about the geometry (last photo)."

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