Second Narrows Water Supply Tunnel

 

 

Second Narrows Water Supply TunnelSecond Narrows Water Supply Tunnel<div class="ExternalClassF1001AB2A84642FD84F998C4F1C6804C"><p>Metro Vancouver is constructing a new water supply tunnel deep under Burrard Inlet, east of the Ironworkers Memorial Bridge between the District of North Vancouver and the City of Burnaby. This project is one of five new regional water supply tunnels that are being designed to meet current seismic standards to ensure the reliable delivery of drinking water in the region in the event of a major earthquake. When complete, the tunnel will also increase the capacity of the existing system to meet the long-term needs of the growing population. </p><p>The new water supply tunnel will be excavated deep underground using a tunnel boring machine. The tunnel boring machine will launch from a vertical entry shaft on the North Vancouver side and progress south under Burrard Inlet to the vertical exit shaft on the Burnaby side. Once the tunnel is excavated, three steel water mains will be installed inside the new tunnel and connected to the new valve chambers at each shaft site, and into the region’s drinking water system. </p> </div>Under Burrard Inlet, east of the Ironworkers Memorial Bridge between the District of North Vancouver and the City of Burnaby

Project Update


  • LAUNCH OF TUNNEL BORING MACHINE AT NORTH ENTRY SHAFT SITE - posted on October 05, 2020

    ​The Tunnel Boring Machine which is used to dig the water supply tunnel, has been lowered into the north entry shaft site in the District of North Vancouver and has started its journey towards the south exit shaft site, located in Second Narrows Park in the City of Burnaby. The machine will be tunneling deep under the Burrard Inlet until mid-2021. On the left is an image of the Tunnel Boring Machine and a video is also available below.

    The contractor has also made substantial advancement on the excavation of the exit shaft in Second Narrows Park, with this work being approximately two-thirds complete. Remaining excavation activities will be completed before the Tunnel Boring Machine reaches the exit shaft. Once this activity is complete, valve chamber construction and water main installation will begin in mid-2021 and last approximately two years.


 

 

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Second Narrows Alignment Map - January 2019http://www.metrovancouver.org/services/water/engagement/construction-projects/ConstructionProjectPictures/_t/SNWST-Alignment-Map_Jan2019-update_jpg.jpghttp://www.metrovancouver.org/services/water/engagement/construction-projects/ConstructionProjectPictures/Forms/DispForm.aspx?ID=53&RootFolder=/services/water/engagement/construction-projects/ConstructionProjectPicturesSecond Narrows Alignment Map - January 2019
Cross section of the Second Narrows Supply Tunnelhttp://www.metrovancouver.org/services/water/engagement/construction-projects/ConstructionProjectPictures/_t/Cross_Section-SNWST_2018-Feb_jpg.jpghttp://www.metrovancouver.org/services/water/engagement/construction-projects/ConstructionProjectPictures/Forms/DispForm.aspx?ID=89&RootFolder=/services/water/engagement/construction-projects/ConstructionProjectPicturesCross section of the Second Narrows Supply Tunnel
SecondNarrows-TunnelSizeImagehttp://www.metrovancouver.org/services/water/engagement/construction-projects/ConstructionProjectPictures/_t/SecondNarrows-TunnelSizeImage_jpg.jpghttp://www.metrovancouver.org/services/water/engagement/construction-projects/ConstructionProjectPictures/Forms/DispForm.aspx?ID=92&RootFolder=/services/water/engagement/construction-projects/ConstructionProjectPicturesSecondNarrows-TunnelSizeImage
SNWST-Timelinehttp://www.metrovancouver.org/services/water/engagement/construction-projects/ConstructionProjectPictures/_t/SNWST-Timeline_JPG.jpghttp://www.metrovancouver.org/services/water/engagement/construction-projects/ConstructionProjectPictures/Forms/DispForm.aspx?ID=21&RootFolder=/services/water/engagement/construction-projects/ConstructionProjectPicturesSNWST-Timeline

 

 

<div class="ExternalClass6DB6C6E84171424CBBACD53D8B9A76E7"><p>Construction Activities Include: </p><ul><li>Shaft excavation and shoring </li><li>Valve chamber and pipe installation </li><li>Welding, backfilling and restoration </li></ul></div>

 

 

2019 – 2024

 

 

Second Narrows Water Supply Tunnel Fact Sheet- January 2019http://www.metrovancouver.org/services/water/engagement/construction-projects/ConstructionProjectPublications/FactSheet-2019-Jan.pdfSecond Narrows Water Supply Tunnel Fact Sheet- January 2019

 

 

<div class="ExternalClass206EA6CC18614BEBA3CE9E0A7FEB3CE0"><p>​<strong>Mon. to Fri. (8 am - 4:30 pm)</strong></p><p>Metro Vancouver Information Centre<br> (Community Liaison Officer) <br>604-432-6200 <br> <strong>Email:</strong><br><a href="mailto:icentre@metrovancouver.org?subject=Second Narrows Water Supply Tunnel Project"> Information Centre</a></p></div>

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