RIDEAU CANAL BACKWATER STRUCTURAL CULVERT REPLACEMENT

The existing 65-year-old culvert had been submerged for years and was at the end of its service life. This unique project involved challenging foundation conditions. Peat and very loose sand, highly compressive and liquifiable material, was present up to 6m below the culvert base. The narrow causeway restricted staging options, and the excavation required the design of a robust shoring system. The watercourse was classified as exceptional baitfish fish habitat and in-water work was only allowed after August.