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Whitebread Line Drain Bridge

Whitebread Line Drain Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: August 1, 2006

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Key Facts

Facility Carried / Feature Intersected
St. Clair Parkway (CR-33) Over Whitebread Drain
Rural: Lambton County, Ontario: Canada
Structure Type
Concrete Rigid-Frame, Fixed
Construction Date and Builder / Engineer
1934 By Builder/Contractor: Unknown

Technical Facts

Rehabilitation Date
Not Available or Not Applicable
Main Span Length
Not Available
Structure Length
Not Available
Roadway Width
Not Available
1 Main Span(s)
NBI Number
Not Applicable

Historic Significance Rating (HSR)
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Bridge Documentation

The Whitebread Line Drain Bridge is located on a scenic part of the St. Clair Parkway, and this small bridge helps add to the scenery. Small structures like this bridge, with their attractive railing designs, add interest to a road, and help a road and a crossing appear like it fits in with the scenery the road is on, rather than a bland, ugly scar on the landscape. This positive effect that even this small bridge has is important, especially on a road like the St. Clair Parkway, which Ontario and Lambton County likes to market as a thing for tourists to drive to enjoy the St. Clair River.

This bridge is also a bit of a mystery. It uses a railing panel design that was used often in Ontario, as well as neighboring Michigan which used a suspiciously similar railing panel design, suggesting that Michigan and Ontario got ideas for bridge railing design from one another. This bridge is unusual however because its concrete railing posts have a different inset design in them from most Ontario bridges with this railing panel design. Interestingly however, the railing posts on this bridge are similar to the earliest railing posts coupled with this railing panel design found on Michigan bridges built between 1932 and 1939. Reportedly, this bridge in Ontario was built in 1934 which puts it in this same time period, which makes it even more suspect that Ontario and Michigan were sharing bridge railing designs. The big mystery is who invented the railing design first, Ontario or Michigan? Read more about the railing design here.


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