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Outlook Railway Bridge

Skytrail Pedestrian Bridge

Outlook Railway Bridge

Primary Photographer(s): C. Hanchey, CC BY-NC 2.0, flickr.com/photos/21953562@N07/

Bridge Documented: May 26, 2015

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Location
Outlook: Division 11 (Saskatoon), Saskatchewan: Canada
Structure Type
Metal 12 Panel Pin-Connected Whipple (Double-Intersection Pratt) Deck Truss, Fixed and Approach Spans: Metal Deck Girder, Fixed
Construction Date and Builder / Engineer
1887 By Builder/Contractor: Dominion Bridge Company of Montréal, Québec and Engineer/Design: C. Schaler Smith
Rehabilitation Date
1912
Main Span Length
242.0 Feet (73.8 Meters)
Structure Length
3,004.0 Feet (915.6 Meters)
Roadway Width
Not Available
Spans
8 Main Span(s) and 19 Approach Span(s)
Inventory Number
Not Applicable

Historic Significance Rating (HSR)
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Bridge Documentation

This bridge's future is at risk!

Bridge Status: This bridge is sitting on a failing substructure and is at severe risk for collapse!

This bridge was built in 1912 using truss spans from another bridge, dating to 1887. In terms of historical significance, the bridge should be evaluated in the context of its 1887 truss spans, thus this is why the construction date is listed as such. At severe risk for collapse due to a truss being distorted, this bridge's trusses, salvaged from the famous Lachine Bridge in Montréal, are the longest Whipple truss in Canada, and indeed all of North America. Whipple deck trusses are more rare than Whipple through trusses in North America. Whipple trusses of any kind are almost unheard of in Canada. Yet this bridge remains, for now, as an enormous large-scale multi-span Whipple truss. It is over 150 feet over the river, and the concrete piers when completed in 1912 were the tallest in the world. The bridge it came from, the Lachine Bridge, was a pioneering continuous through truss bridge. The spans seen at Outlook were the simple truss approach spans of the bridge. The Outlook Railway Bridge had been converted for pedestrian use, but was closed in 2013. The reason for closure is obvious since the truss members show severe distortions. The cause of this is reported to be due to movement of the riverbed itself. Joanne David contacted HistoricBridges.org and explains the problem: The riverbed itself is moving, and in need of ecological treatment; this sloping downward to the riverbed has pushed the metal structure towards the concrete piers on the east side. This east side was deemed unsafe.

The spans of the bridge are as follows (quantity by length in feet): 6x45, 5x60, 2x80; 8x242; 3x45, 2x60, 1x80. The contractor for the 1912 substructure was J.D. McArthur & Co.

View Historic Bridge Inventory Sheet For This Bridge

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Maps and Links: Outlook Railway Bridge

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