In some areas where the metal could impede groundwater too heavily, the city is using concrete instead, which takes up more space during construction, but will be similarly narrow as the rest of the ...

The Sunnyside flood barrier — a 2.4-kilometre project costing an estimated $50 million — is designed to mitigate flood damage, last seen in 2013 when some communities were devastated.

The 1.4-kilometre barrier features steel sheet piles, earthen berms and concrete walls built to resist a one-in-200-year flood event.

At 2.4-km long with an estimated cost of $50 million, the Sunnyside Flood Barrier project is set to be built on the north side of the Bow River between 14 Street N.W. and Centre Street.

Stansky said the barrier, which was estimated by the city to cost $50 million last year, was chosen partly because its narrow size is less disruptive than other flood-mitigation options like an ...