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La Salle Causeway Bridge

Kingston Bridge

La Salle Causeway Bridge

Primary Photographer(s): Nathan Holth and Rick McOmber

Bridge Documented: July 20, 2013

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Key Facts

Facility Carried / Feature Intersected
Ontario Street (CR-2) Over Cataraqui River (Kingston Bay)
Location
Kingston: Frontenac County, Ontario: Canada
Construction Date and Builder / Engineer
1917 By Builder/Contractor: Unknown and Engineer/Design: Strauss Bascule Bridge Company (Strauss Engineering Company) of Chicago, Illinois

Technical Facts

Rehabilitation Date
Not Available or Not Applicable
Main Span Length
170 Feet (52 Meters)
Structure Length
212 Feet (65 Meters)
Roadway Width
24 Feet (7.32 Meters)
Spans
2 Main Span(s)
NBI Number
Not Applicable

Historic Significance Rating (HSR)

Bridge Documentation

This bridge is a large and exceedingly rare example of a Strauss heel-trunnion bascule bridge in Canada. Famous engineer Joseph Strauss's single leaf heel-trunnion bridge were more common on railways, but are today rare anywhere in Canada, partially due to demolition. Compared to other Strauss heel-trunnion bascule bridges, this one has a very unique appearance that makes the bridge unique. This is due to two factors. First, the rocking truss that holds the counterweight and rotates around the counterweight trunnion has more angles to it, and more diagonals extending from the counterweight trunnion that with most heel trunnion bascule bridges. This gives this portion of the bridge a more curved-like appearance. Secondly, the top chord of the bascule leaf is not parallel to the bottom chord, and instead the truss depth decreases as it extends away from the counterweight link.

This bridge remains in outstanding condition today. The bridge was rehabilitated with MMM Group Limited as lead consultant. Sitting in the middle of a causeway, the bridge is hard to ignore and is a recognizable landmark. Some alterations have been made to the bridge over the years. Some of the vertical members have what was likely originally v-lacing or lattice replaced with plate with circular holes in it. A historical photo of the bridge shows a highly ornamental bridge tender house next to the bridge at the level of the top chord. Today, this no longer remains. The current bridge tender house is located at ground level at the northwest quadrant around the bridge. Inside, it contains modernized operating control panels for the bridge. The concrete counterweight has had steel paneling added around it.

As of 2013, there has been talk of building a second bridge to cross the river and bay in this area, but currently it does not appear that this highly significant heritage bridge is at risk for demolition.

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Photo Galleries and Videos: La Salle Causeway Bridge

 
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Bridge Photo-Documentation
Original / Full Size Photos
A collection of overview and detail photos. This gallery offers photos in the highest available resolution and file size in a touch-friendly popup viewer. Alternatively, Browse Without Using Viewer
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Bridge Photo-Documentation
Mobile Optimized Photos
A collection of overview and detail photos. This gallery features data-friendly, fast-loading photos in a touch-friendly popup viewer. Alternatively, Browse Without Using Viewer
View Video
CarCam: Westbound Crossing
Full Motion Video
Note: The downloadable high quality version of this video (available on the video page) is well worth the download since it offers excellent 1080 HD detail and is vastly more impressive than the compressed streaming video. Streaming video of the bridge. Also includes a higher quality downloadable video for greater clarity or offline viewing.

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Maps and Links: La Salle Causeway Bridge

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