CN plans to rehabilitate the three in-river piers of its Mile 260.4 Bridge (Clover Bar Railway Bridge) over the North Saskatchewan River, which was originally built in 1908. The work includes inspections, concrete repairs where needed, replacement of steel nosing plates, and riprap around the pier bases.
CN will also replace five bridge spans, turning the single-track bridge into a double-track bridge. The three 225-foot deck truss spans over the river will be replaced from two temporary cofferdams using twin 650-tonne all-terrain cranes, and the two smaller 150-foot spans over land will be replaced using a single large crane. Some modification of the adjacent river valley slopes is anticipated to provide space for the lifts.