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CR-79 Bridge

Aberfeldy Line Bridge

CR-79 Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: August 18, 2004 and June 5th, 2006

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Facility Carried / Feature Intersected
CR-79 (Aberfeldy Line) Over Sydenham River
Brooke-Alvinston Township and Dawn-Euphemia Township: Lambton County, Ontario: Canada
Construction Date and Builder / Engineer
1957 By Builder/Contractor: Unknown
Rehabilitation Date
Main Span Length
150.0 Feet (45.7 Meters)
Structure Length
150.0 Feet (45.7 Meters)
Roadway Width
Not Available
1 Main Span(s)
Inventory Number
Not Applicable

Historic Significance Rating (HSR)
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Bridge Documentation

Lambton County gave a date of 1957 for this bridge. Typical of younger truss bridges like this one, the bridge does not have v-lacing on vertical and diagonal members and instead uses rolled beams for those members, which is characteristic of a newer truss bridge. The top chord and end post is built-up however and has v-lacing on the underside. Some of the sway bracing is built-up with v-lacing, and the portal bracing is v-laced as well. This road used to be under the jurisdiction of the province, and was King's Highway 79. A provincial downloading transferred the road, as well as this bridge to the county. The road is now signed as Lambton County 79.

Despite how amazingly flat this region is, this bridge is hidden around a broad curve in the roadway and down a very shallow valley, so it can be a surprise for someone who never drove on this road before.

The fist visit to this bridge was made in August of 2004, finding the truss superstructure to be in good condition. A June 5, 2006 visit revealed that deck and abutment rehabilitation project was nearly completed. Unfortunately, the original metal railings have been replaced with modern New Jersey barriers which are not very visually appealing. The only good thing about the new barriers is that their solid design may help deflect corrosive winter deicing salts away from the trusses. However, it would have been nice to see the original railings left in place behind the new barriers. The original railing on the bridge, visible in 2004, were steel channel on the truss, with standard design ornamental railing panels on the abutments.

Photos of this bridge from before and after the renovations are available in the photo gallery.


Photo Galleries and Videos: CR-79 Bridge


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