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Quebec Bridge
Society: ASCEMain Category: CivilSub Category: BridgesEra: 1910-1919DateCreated: 1917Quebec BridgeQuebec CityState: QuebecZip: G1K 4J9Country: CanadaWebsite: http://www.asce.org/Project/Quebec-Bridge/Creator: McLure, Norman , Cooper, Theodore

The bridge is immense, not only in length and weight but in width. At 67 feet wide, it can accommodate two sets of railway tracks, two sets of streetcar tracks and two roadways.

It took three tries and cost 89 lives, but the city of Quebec was determined to compete with provincial rival Montreal for commercial rail traffic in the late 19th century. The solution was a rail bridge across the St. Lawrence River requiring a single cantilever span 1,800 feet long - the longest ever attempted. 

YearAdded:
1987
Image Credit: Courtesy Wikipedia/Sebastien Savard (CC BY-SA 2.5)Image Caption: Quebec BridgeEra_date_from: 1917
Kinzua Railway Viaduct
Society: ASCEMain Category: CivilSub Category: BridgesEra: 1880-1889DateCreated: 1882Kinzua CreekMcKean CountyState: PAZip: 16735Country: USAWebsite: http://www.asce.org/Project/Kinzua-Railway-Viaduct/Creator: Chanute, Octave , Phoenix Iron Works

The workforce consisted of less than 100 men, yet they finished construction in just 94 days. Such speed was possible due to the elimination of scaffolding. Instead, iron rods were used to support construction of the trusses between the towers, and workers moved back and forth across the rods. A dangerous venture, yet no workers were seriously injured.

YearAdded:
1982
Image Credit: Courtesy Flickr/Peter Pawlowski (CC BY 2.0)Image Caption: Kinzua Railway ViaductEra_date_from: 1882
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