Sewer crews walking through a construction site

Oakridge Trunk Sewer Upgrades

We are upgrading critical sewer infrastructure along sections of W 49th Avenue, W 46th Avenue, Tisdall Street, and Fremlin Street.

This project was initiated in response to multiple flooding events that occurred during August and September 2013, and June 2014. We will replace the existing Oakridge Trunk, installed in 1957, with a larger capacity and separated sewer system – one pipe for rainwater runoff and one pipe for sanitary sewer.

The new sewer will have a life expectancy of 100 years and will help to serve this growing neighbourhood.

Project details


  • W 49th Ave, Cambie St to Tisdall St
  • Tisdall St, W 49th Ave to W 46th Ave
  • W 46th Ave, Tisdall St to Fremlin St
  • Fremlin St, W 46th Ave to W 43rd Ave

Expected duration

  • Start: March 2017
  • End: Late spring 2018

Hours of work

  • Monday to Friday: 7am to 5:30pm
  • Weekends and extended hours as needed

Additional details regarding the construction schedule will be made available as the project progresses.

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Project timeline

Section Estimated start Estimated end
W 49th Ave from Cambie to Tisdall St March 2017 October 2017
Tisdall St from W 49th Ave to W 46th Ave July 2017 Spring 2018
W 46th Ave from Tisdall to Willow Ave October 2017 Spring 2018
W 46th Ave from Willow to Fremlin St September 2017 Spring 2018
Fremlin St from W 46th Ave to W 43rd Ave November 2017 Spring 2018

How this project may affect you


  • Full closure of Fremlin St from W 46th Ave toW 43rd Ave
  • Full closure of W 46th Ave from Willow St to Fremlin St
Approximately mid-December, Tisdall Street will be re-opened to through traffic and parking will be temporarily restored.  Please note that some street work will continue on Tisdall Street in early 2018 and any new temporary parking regulations should be observed.


During construction, changes to street parking will occur. Please ensure to watch for No Parking signs as work progresses.

Access to residences

  • During street construction, residents access to laneways will be maintained.
  • During laneway construction, residents access to street parking will be maintained.
  • Sidewalk access and pedestrian street crossings will be generally maintained and detoured as necessary.

What is a trunk?

A sewer trunk line collects waste and storm water from smaller sewer lines.

Waste and storm water collected in the larger trunk eventually flows to the Iona Island Wastewater Treatment Plant located in Richmond.