[developing article]

Municipal --- Designed and administered construction (small team, multiple consultants) to upgrade overall capacity for the existing 900-mm-diameter culvert involving 40 m of 1600-mm-diameter aluminized galvanized corrugated metal pipe with head box and Alaska steep-pass fishways

Stevens Drive over Hadden Creek, West Vancouver

The one project at InterCAD that related to my earlier work at Fisheries and Oceans. We worked with Barry Chilibeck, and his team at Northwest Hydraulics. Both of us had worked in the Resource Restoration Unit at Fisheries and Oceans in the late 1990's.

The street culvert crossing here is very deep.

We installed an overflow culvert at a higher invert as well as steep-pass fishways at the inlet and outlet of the original culvert. The overflow culvert involved some extra corrosion resistance and a manhole. West Vancouver required us to install a pipe with a long service life and we chose aluminized and galvanized corrugated metal pipe. One of our options was plastic coated pipe.

In hindsight and considering microplastics in the ocean, I'm very pleased we avoided plastic coating. This creek discharges into Brothers Creek and the Capilano River. Only a kilometre from Burrard Inlet.