Surespan and its partner – Nak’azdli Whut’en First Nation – designed, supplied and installed the longest clear-span temporary bridge in the world. The 235 m bridge mitigated risk to the environmental and cultural values of the site.
The structure comprised an 85 m timber deck main-span, 30.5 m timber deck jump span, four-18 m steel deck spans and three-15 m steel deck spans, all supported on driven piles installed at 10 pier locations.
The Project was notable for the challenges overcome in developing and executing the girder launch, which was one of the more complex and innovative launches Surespan has performed. To avoid the environmental impact of trenching a launch bed, the bridge had to be segmentally built and launched at the same time.
Bridge decommissioning will involve removal of the free-span deck and the de-launch of the girders, followed by removal of the other spans.
Watch the construction time-lapse here.