A digger at a sewer construction site.

Oak Street sewer separation upgrades

This project will result in 1 kilometre of new sewer pipes with a life expectancy of about 100 years.

Separating a sewer system 

We are replacing aging combined sewer infrastructure along Oak Street, West 70th Avenue, and Fremlin Street with separated pipes. 

The upgrade of the sewer system will:

  • Accommodate population growth in the Cambie Corridor
  • Effectively manage heavier rainfall expected with climate change
  • Handle higher capacities of rainwater and sewage separately 
  • Help protect the water quality in the Fraser River

The project is primarily funded by developers through the Development Cost Levy, with additional funding from local development projects.

What's happeningConstruction on West 70th Avenue is underway

Construction on West 70th Avenue will take place from Fremlin Street to Oak Street until summer 2024.

There will be temporary removal of parking and changes to access. Watch for signage.



Sewer upgrades:

  • Fremlin Street from SW Marine Drive to W 70th Avenue
  • W 70th Avenue from Fremlin Street to Oak Street
  • Oak Street from W 70th Avenue to W 64th Avenue


Infrastructure upgrades and road improvements are scheduled from September 2023 to spring 2025.

Work hours

Monday to Friday

  • 7am to 7pm for work on Fremlin Street and W 70th Avenue
  • 8pm to 5am for work on Oak Street

How this project may affect you

This is a multi-phased project. Information on upcoming phases along W 70th Avenue and Oak Street will be updated closer to construction start.


Here are our planned next steps:

  • September 2023

    Daytime construction on Fremlin St starts

  • February 2024

    Daytime construction on W 70th Ave starts

  • Summer 2024

    Nighttime construction on Oak St starts

  • Winter 2024/2025

    Sewer construction is complete

  • Spring 2025

    Final street restoration is complete

Contact us

Do Nguyen
Community liaision