Manitoba's bridge to nowhere, the 17-span Port Nelson Bridge, still braving the fierce waters of the Hudson Bay after a century of abandonment.
http://www.airphotona.com/nextimg.asp?imageid=3484
The Esplanade Riel pedestrian bridge, on practically every postcard of Winnipeg, with the neighbouring Canadian Museum for Human Rights.
http://www.immigratemanitoba.com/esplanade-riel-bridge/
A place of urban legends, the Arlington Bridge. It was actually meant to cross the Nile.
http://www.mhs.mb.ca/docs/sites/arlingtonbridge.shtml