Metro Vancouver Notice

First Narrows Tunnel Improvements Project


Metro Vancouver provides a reliable source of safe, high quality drinking water to residents and business across the region through a system of watersheds, dams, treatment facilities, reservoirs, pump stations and water mains.

Operating our vast drinking water system requires constant upgrades, improvements, repairs and expansion, in order to meet the needs of a growing population.

Metro Vancouver will be replacing and upgrading two aging valves that help control water flow through the First Narrows Tunnel Crossing, a water supply tunnel located deep under Burrard Inlet that delivers water from the Capilano Watershed to the City of Vancouver and to the southwestern parts of the region. These valves are housed within two valve chambers located along the Capilano corridor, south of Marine Drive and within Metro Vancouver’s works yard south of Welch Street (please see map on reverse).

Construction Schedule, Activities and Traffic Impacts

Construction south of Marine Drive is scheduled to begin in late October 2020 and will be completed by mid-December 2020. Construction activities will include preparatory work, excavation, installation of water valves and road restoration.

In order to complete the work safely and efficiently, the following traffic changes (see map on next page) will be in place along the Capilano corridor, between Marine Drive and Welch Street, from November 2 to December 13, 2020:
• Capilano corridor will be temporarily closed to southbound through traffic from Marine Drive.
• Northbound traffic beside the construction area to Marine Drive will be maintained for local traffic only.
• Two-way traffic south of the entrance to the International Plaza along the Capilano corridor will be maintained for local traffic only.
• Two-way traffic along Mathias Road to and from Marine Drive will be maintained for local traffic only.

Please follow detour signage and directions from traffic control personnel.

Construction within Metro Vancouver’s works yard south of Welch Street is scheduled to begin in early 2021 for approximately three months. There are no traffic impacts anticipated for this work.

Hours of Work

Typical hours of work will take place Monday through Saturday between 7:00 AM and 5:00 PM. There may be times when crews need to work beyond these typical hours to expedite project completion.

For any questions or concerns about this improvements project, please contact our Community Liaison at the number provided below.

Thank you for your patience as we complete this necessary work.

CLICK HERE to download the Notice and Map

Community Liaison: 604-432-6200
(Monday to Friday from 8 AM to 4:30 PM)

After Hours Emergency: 604-451-6610

Email: (Please include “First Narrows Tunnel Isolation Improvements” in the subject line of your email)

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320 Seymour Blvd, North Vancouver, BC, V7L 4J5