Schreyer Award

Presented to designers of the project with highest technical merit. 


Ausenco Engineering Canada Inc.
Port Mann Water Supply Tunnel
Coquitlam and Surrey, British Columbia


Metro Vancouver’s existing Port Mann water main crossing, which was constructed in a trench under BC’s Fraser River, reuired replacement to address seismic and scour issues and to meet future potable water demand. Ausenco’s team introduced many industry firsts designing the new shafts and tunnel, situated in liquefiable soils. These included addressing the highest water pressure encountered in Canadian soft ground tunnelling, unreinforced ground support walls for the shafts, and a concrete shaft designed to yield and significantly deform during an earthquake yet maintain functionality. This project more than doubles the capacity of the old water main and provides enhanced earthquake and river erosion resiliency to help ensure the continued delivery of drinking water to Metro Vancouver residents.

Press release
Canadian Consulting Engineer article


This project also won a 2017 Award of Excellence in the Water Resources category at the Canadian Consulting Engineering Awards on October 24, in Ottawa.

Awards of Excellence are bestowed to ACEC member firms who have achieved the highest level of excellence in quality of engineering, innovation and societal benefit. 

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