Oshawa Ontario - Providence Road Bridge is a timber 5 span vehicle overpass over a Canadian Pacific Railway line near Oshawa.
 
The superstructure is comprised of 15 timber stringers per span supporting a transverse timber plank deck, curbs, and hand rail.
 
It was deteriorated, and scheduled for replacement and had been taken out of service.
 
In June of 2013, Wood Research and Development (WRD) performed an inspection of the bridge and made recommendations for a repair strategy.
 
Beginning in October of 2013, Timber Restoration Services (TRS) completed the retrofit and replacement of the bridge.
 
The replacement superstructure is made up of curved, pressure treaded, glulam timber girders.
 
The curved girders allowed for increased clearance above the railway, while minimizing the amount of fill required at the abutments.
 
The deck is vertically laminated transverse glulam panels.
 
A timber guard rail was provided utilizing a crash-tested design with curved glulam components to match the curve of the bridge.
 
All of the timber components are prefabricated including all cutting and drilling, prior to being pressure treated.
 
This avoids exposing untreated timber by cutting or drilling in the field.
 
Due to the complexity and the precision required for the curved bridge and guard rail system, the complete superstructure, deck, and guard rail were pre-assembled in the shop to ensure a proper fit.
 
The parts were then carefully labeled, disassembled, and sent to be pressure treated.
 
After treatment all parts we're shipped to the site for final assembly.
 
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