Broadway Subway - Millennium Line Extension to Arbutus | U/C

[officedweller]

Project update e-mailed today:

http://app.webtrackz.com/?q=email/view/14U6K4yY9lOgsO0T9RrdVKbuJ6oOO-H1bNOEhqv0o8OJaegBPfBkxF2w

Traffic decks approach finish line

With the completion of the South Granville traffic deck in late summer and the Oak-VGH traffic deck just this month, crews have now finished three of five traffic decks on Broadway. The remaining two are scheduled to be complete in winter. When complete, crews work on excavating the new stations underneath while people move above ground on the traffic decks.

Broadway remains open while we work to complete the traffic decks – and for the length of the project. While the streets and sidewalks may look a bit different where the future stations are being constructed, access to residences, businesses, health services and parking lots is being maintained for all abilities. If you visit Broadway for appointments, restaurants or shopping, you can look for directional signs on site or take a look at the parking and access maps available online before you go. Please plan extra travel time, watch for wayfinding information, and obey traffic control personnel and signs at all times.

Construction forecast

Our planned construction activities for the next three months include:

• Continue constructing the elevated guideway between VCC-Clark Station and the future Great Northern Way-Emily Carr station;
• Assembling Phyllis, the second TBM, for a planned launch in winter. Continue removing excavated material from boring the first tunnel;
• Building the underground portion of the future Mount Pleasant Station and excavating the Broadway-City Hall, Oak-VGH, South Granville and Arbutus stations;
• Completing the traffic decks for the Broadway-City Hall and Arbutus stations; and,
• Finishing the relocation of major utilities at the Broadway-City Hall and Arbutus work sites.

We understand that construction is disruptive and are working hard to minimize impacts in the community – thank you to everyone for your ongoing patience as we work to build this project as quickly as possible.

Did you know?

At 2.4 meters in diameter, the new section of the Cambie combined storm and sewer system being built by the Broadway Subway Project is big enough to stand in!

This key utility is being relocated to make room for the new escalators that will connect the Canada Line outbound platform directly to the extended Millennium Line, creating a seamless underground connection between lines for passengers. This pipe carries both sewage and storm water runoff to wastewater treatment facilities. As part of that work, the sewer is being expanded to 2.4 meters from 1.8 meters previously, which will better prepare the system for increases in population and more heavy rainfall events due to climate change.

[jollyburger]

Yeah looks like it's still a ways off before they finish



https://trafficcams.vancouver.ca/cameraimages/BroadwayWest_Cambie.jpg

[chowhou]

Originally Posted by officedweller

Project update e-mailed today:

http://app.webtrackz.com/?q=email/view/14U6K4yY9lOgsO0T9RrdVKbuJ6oOO-H1bNOEhqv0o8OJaegBPfBkxF2w

I was under the impression that whenever they did major infrastructure work the CoV wanted to convert combined sewer + storm water to separate utilities. No budget/no desire here?

[jollyburger]

Originally Posted by chowhou

I was under the impression that whenever they did major infrastructure work the CoV wanted to convert combined sewer + storm water to separate utilities. No budget/no desire here?

Might just be a simplification on the terminology in the newsletter. I think it's both CoV and Metro Vancouver trying to separate them.

In implementing the 2010 Integrated Liquid Waste and Resource Management Plan, Metro Vancouver had to develop strategies to eliminate combined sewer overflows from the Vancouver Sewerage Area by 2050. To help Metro Vancouver achieve this goal, McElhanney completed numerous combined trunk sewer separations strategies over the past seven years, including the Glenbrook Trunk Sewer Separation Study (2013-2014), the Hastings-Cassiar Combined Trunk Sewer Separation (2015-2016), the Manitoba Street Combined Trunk Sewer Separation Strategy, (2016-2017), the Cambie Street & Canoe Creek Combined Trunk Sewer Separation (2018-2019) and the Manitoba Street Catchment Overland Flow and Green Infrastructure Assessment (2019 – 2020).

https://www.mcelhanney.com/project/metro-van-combined-trunk-sewer-separation/

A little more than 2,100 kilometres of sewer pipe run through underground Vancouver, an infrastructure network valued at $6-billion. Almost 55 per cent has been upgraded to separated pipes for sewer and rain water.

In 2019, engineering reported that it had managed to replace 4.1 kilometres of sewer mains for $26.7-million. In 2018, it was 5.4 kilometres for $22.7-million. In 2017, only 4.6 kilometres were completed for $31.5-million, somewhat less than the 5.8 kilometres planned that year. In 2016, it was 7.5 kilometres for $37.9-million, 2.5 kilometres less than planned because “trunk size, arterial street and co-ordinated projects with higher unit rates resulted in higher expenditures per kilometre.” At those rates, the city is not on track to have its system completely separated by 2050, which the province has mandated it must.

https://www.theglobeandmail.com/canada/b...er-housing-leaves-infrastructure-behind/

[officedweller]

Originally Posted by chowhou

I was under the impression that whenever they did major infrastructure work the CoV wanted to convert combined sewer + storm water to separate utilities. No budget/no desire here?

Yeah, I thought so too...

[madog222]

This is a sewer main (or trunk), it's going to be combined until everything feeding it is separated.

[chowhou]

Originally Posted by madog222

This is a sewer main (or trunk), it's going to be combined until everything feeding it is separated.

Hm I still don't see why they wouldn't put in a non-functional but ready-to-go stormwater main while the ground is ripped up.

[jollyburger]

This Broadway Plan document has a lot of information about the current state of the sewage/storm trunks around page 104

The watersheds are serviced by both separate sanitary and storm sewers as well as combined sewers, which carry both stormwater and sanitary flows. Relative to some other locations in the city, there is a substantial number of separated sewers in the Broadway Plan area (approximately 67%), although there are still significant clusters of local combined pipes and many of the trunks are still combined. The regional Metro Vancouver interceptor system (which conveys flows from Burnaby and Vancouver to Iona Wastewater Treatment Plant) is also a combined system in the Broadway Plan
area.
Sewer separation in the area has occurred through renewal-based programs and
development, as well as through targeted separation in areas that historically contributed CSO to False Creek. Improved water quality in False Creek and the associated beaches has long been an objective in the planning and upgrading of the Vancouver sewer systems. Combined sewer overflow elimination by 2050 is also a requirement of the Integrated Liquid Waste and Resource Management Plan (2011). In recent years, council has passed motions asking staff to explore options to accelerate CSO elimination and to target continuous improvements over time. The planning in Broadway supports this objective while the city-wide Healthy Waters Plan is under development.

https://council.vancouver.ca/20220518/documents/pspc1REVISED.pdf

[jollyburger]

Mt Pleasant and & Oak stations

• Video Link

• Video Link

[WarrenC12]

Crews were out drilling at Broadway and Heather the other day, and they've put a temporary plate on the hole. I wonder what they are looking for?

[jollyburger]

Originally Posted by WarrenC12

Crews were out drilling at Broadway and Heather the other day, and they've put a temporary plate on the hole. I wonder what they are looking for?

Geotechnical investigations on W. Broadway at Heather and Burrard streets beginning on October 31 (click to view detailed notice)

BSPC will be conducting geotechnical investigations to collect information that will inform planning for tunnel construction.
Work will take place for about one week from 10 a.m. to 3 p.m. on W. Broadway at Heather Street beginning October 31. Work will commence at Burrard Street beginning on November 3.
Work activities will include removal of asphalt, excavation using a hydrovac truck, placing of road plates, installation of sensor equipment, and repaving the areas.
The #99 B-Line eastbound bus stop at Heather Street will move from the west side to the east side of Heather Street from October 31 for up to one week.

https://www.broadwaysubway.ca/construction/current-work/

[scottN]

Originally Posted by jollyburger

This Broadway Plan document has a lot of information about the current state of the sewage/storm trunks around page 104



https://council.vancouver.ca/20220518/documents/pspc1REVISED.pdf

You can see the full sewer network on Vanmap. The stormwater sewers don't necessarily follow the same routes as the sanitary sewers. For instance Mt. Pleasant industrial area storm sewers go into false creek near the Olympic Village, while the sanitary sewers are pumped up Yukon Street into the 8th avenue interceptor that goes to Iona.

[Dave2]

Originally Posted by WarrenC12

Crews were out drilling at Broadway and Heather the other day, and they've put a temporary plate on the hole. I wonder what they are looking for?

I wonder if it has anything to do with the underground creek at that location.

Four photos from a flood in 1909

https://www.reddit.com/r/vancouver/comme...r_street_creek_overflowing_ninth_avenue/

[WarrenC12]

Originally Posted by Dave2

I wonder if it has anything to do with the underground creek at that location.

Four photos from a flood in 1909

https://www.reddit.com/r/vancouver/comme...r_street_creek_overflowing_ninth_avenue/

Wow great find, and probably.

[Tvisforme]

Originally Posted by Dave2

I wonder if it has anything to do with the underground creek at that location.

Four photos from a flood in 1909

https://www.reddit.com/r/vancouver/comme...r_street_creek_overflowing_ninth_avenue/

It's not an issue, it's a feature for the extension:

[Migrant_Coconut]

Would it be possible to rewild Heather once the subway's done? After the last week or so, methinks we could use all the flood control we can get.

[madog222]

Originally Posted by Migrant_Coconut

Would it be possible to rewild Heather once the subway's done? After the last week or so, methinks we could use all the flood control we can get.

Yes! Here is a long term vision for this throughout the city from the Vancouver Plan.

https://vancouverplan.ca/ (PDF page 54)

[chowhou]

Originally Posted by madog222

Yes! Here is a long term vision for this throughout the city from the Vancouver Plan.

Not sure if it makes a lot of sense to designate the False Creek Flats an ecologically sensitive area?

[swimmer_spe]

Originally Posted by chowhou

Not sure if it makes a lot of sense to designate the False Creek Flats an ecologically sensitive area?

You could label it that which would mean that industry like that likely would move away as more regulations would shut them down.

[Changing City]

Originally Posted by swimmer_spe

You could label it that which would mean that industry like that likely would move away as more regulations would shut them down.

We're way off topic ... and, as you can read, that's a mini-storage warehouse and an artists studios. Only the tanker in the sidings might pose any sort of potential risk to an ecolgically sensitive zone, which would presumably only be viable if the railyards weren't there (which is not the current expectation).