Rail cars sit crumpled on a track near the Bonnybrook train bridge that runs south of the CP Ogden rail yard in Calgary, Alberta, Canada on Thursday, June 27, 2013. The City of Calgary

 

              Rail cars sit crumpled on a track near the Bonnybrook train bridge that runs south of the CP Ogden rail yard in Calgary, Alberta, Canada on Thursday, June 27, 2013. The City of Calgary
Rail cars sit crumpled on a track near the Bonnybrook train bridge that runs south of the CP Ogden rail yard in Calgary, Alberta, Canada on Thursday, June 27, 2013. The City of Calgary says conditions have stabilized at the site of the bridge collapse that caused six cars to derail and start sinking into the Bow River. Canadian Pacific Railway says five of the cars are carrying a petroleum product used to dilute raw oilsands bitumen. The city's acting fire chief has said crews are stringing a cable through the railcars and securing it to bulldozers on land. The industrial area near the bridge has been evacuated and booms are being deployed down river in case of any spills. There are no homes nearby, but several business are effected. (AP Photo/The Canadian Press, Jordan Verlage)