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Largest Dur•A•Span Box Culvert recently installed in Ontario

November 1, 2009

AIL’s Dur•A•Span Aluminum Box Culvert, largest in Ontario.An older, single-span steel bridge in the town of Plympton-Wyoming, on Lake Huron in Ontario, had been closed for over a year due to safety issues. The bridge’s concrete abutments had deteriorated and its rail system did not meet code. Town officials, and especially residents using the Uttoxeter Road crossing over Hickory Creek, were eager to have a safe and dependable replacement as soon as possible.

After considering several options, the project partners chose an AIL Dur•A•Span Aluminum Box Culvert as it offered an environmentally-friendly, open-flow solution that was well-suited to the site.

Reinforcing rib technology allows for longer, stronger spans

The Hickory Creek project represents the largest aluminum box culvert ever installed, with a span of 12.013 m, a rise of 3.562 m and a length of 12.344 m. The cover depth is 600 mm to 670 mm and there is an engineered backfill envelope of 3 m on each side, up to the road grade. This solution was designed for a CL-625 Ontario Truck Live Load. AIL’s economical and easy-to-install Vist-A-Wall MSE Structural Wall System (Welded Wire Wall with Cobble Stone) was used for the headwalls.

Dur•A•Span Box Culvert partially installed in the winter to speed completion.In response to the Town’s requirement to get the new structure in place as soon as possible, assembly, placement and some of the backfilling were able to take place during the winter months. The structure was assembled adjacent to the site and then crane-lifted in one piece onto the footings. With the spring thaw, the remaining backfill, road surface and rail structures were completed.

Ontario-based project partners were: The Town of Pympton-Wyoming; Northwest Consulting Engineers of Ilderton; and Murray Mills Excavating and Trucking (Sarnia) Ltd. Interesting project factoid: Just 2.5 km further upstream on Hickory Creek is the site of AIL’s first Super•Cor Box Culvert ever installed in Ontario, in 1993.

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