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Stage 2 - Confederation Line - Construction Updates


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So I've been noticing that some notice / progress events are hidden in the news feed on the Stage 2 website and are not always brought forward. Not sure if its something that can be discussed with the Stage 2 team to see if there is a better solution possible, but I have not been that impressed by the newsletters so far?

 

EDIT: I might simply be having issue with my subscription to the newsletter, but I wish we got more regular updates similar to what was done for Stage 1. Or even some sort of "progress" chart / timeline. Also higher resolution photos. But thats just me being picky.

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Our Snapshot updates have resumed, now starting coverage for Stage 2 LRT construction. New to Snapshots will be video walkthroughs, discussing the current locations and what will be changing, a

The eastbound detour lanes on the 174 are now open. Shouldn't be long before the westbound detour opens as well to allow crews to build the flyover. 

I agree. It would have been better to sacrifice Convent Glen, surrounded by car-centric suburbia, in favour of a station at Jasmine Crescent. 

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  • Moderator

I agree. The updates are more sporadic than Stage 1's weekly postings.

I think I am also having issues getting their emails. I haven't gotten a monthly update in several months and I now have 3 separate email accounts signed up. I do get the construction notices usually though.

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The updates and newsletters are a disorganized mess.

I registered for the newsletters a few times. For all extensions. French and English.

I think I only ever received one French construction update (last week) that entire time. I don't think I ever receive the monthly updates. I maybe receive most of the construction notices, but not all of them. 

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Q4 2020 Quarterly update highlights:

 

  • The Goldenrod Bridge at Tunney's is set to be completed in Q2 2021, which will enable the removal of the temporary embarkment bridge buses use to access the bus loop from Scott, and thus extend tracks west;
  • Support for excavation at Rochester field and New Orchard started Q4 2020;
  • The new Lincoln Fields station construction is expected to start Q2 2021;
  • New Iris Street bridge set to start Q3 2021, with station Q2 2022;
  • Baseline bus loop complete in Q4 2020, with bus operator building set to be constructed Q2 2021;
  • Montreal Station bridge construction set to start Q1 2021;
  • Construction of a new Trim/174 intersection started Q4 2020 and is ongoing.
Edited by J.OT13
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TransLink has released architectural schematics and preliminary conceptual renderings of the interior and exterior of all Millennium Broadway extension stations. This is in stark contrast with Ottawa, that had released the preliminary rendering from the two team RFP submissions, and a few extra renderings here and there.

Here are some features of the Vancouver project: 

 

  • The new Broadway stations will feature elevators, stairs and both up and down escalators. 
  • All stations will feature a concourse level. 
  • Every station will include 3,300 square feet of retail. 
  • No public washrooms are planned for the project, but space will be set aside at Arbutus (the terminus until the line is extended to UBC) and Broadway-City Hall (transfer between Millennium and Canada Lines). 
  • Arbutus Station and Great Northern Way Station will have secure bike parkades. 
  • Stations will only have one entrance, with a second emergency exit only. 
  • Stations are designed for additional entrances in the future.

Stations seem very similar to current and planned underground stations in Ottawa, with simple/functional designs and low ceilings. Vancouver has a few extra features like up and down escalators and retail at all stations, but we have more entrances at busier stations, and washrooms at transfer stations. 

Vancouver's Broadway stations are all underground as this was necessary due to the route while in Ottawa, there was always an opportunity to make them above ground or open air trenches. 

Here is the DailyHive article with dozens of renderings and cross-sections of the Boradway subway stations: https://dailyhive.com/vancouver/broadway-subway-skytrain-millennium-line-extension-station-designs

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O-Train East Extension: Construction Activities and Community Impacts

90-Day Lookahead - March to June 2021

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The O-Train East Extension is one of the three major extensions to Ottawa’s light rail transit system. The extension will add over 12 km of new rail and 5 new stations (Montreal, Jeanne d’Arc, Convent Glen, Place d’Orléans, and Trim) between Blair Road and Trim Road.  The LRT will travel predominantly within the median of Highway 174.

In 2021, heavy construction will take place throughout the east alignment as crews build rail, pedestrian and road bridges, new highway lanes, the rail guideway (dedicated rail line) and begin station construction. While it is exciting to see progress on the LRT project, some of these activities may cause disruptions for area residents, including intermittent night work, traffic detours, site lighting or additional construction vehicles in the area.
 
This notice provides an overview of upcoming activities along the O-Train East LRT project alignment, as well as the expected community impacts including hours of work, noise from crews and equipment, pedestrian, and vehicle mobility, etc.

 

MAJOR WORKS 

Blair Station to 174 Median Rail Bridge
Work continues to progress on the Blair Station to 174 Median Rail Bridge, 800 metres east of the OR174 Blair Road Interchange. In April, girders (horizontal supports for the bridge) will be laid on top of the columns, followed by the installation of decking. The Blair Station to 174 Median Rail Bridge structure will be completed in the Summer 2021, with track work to follow.

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Blair Road to Montreal Road
Last year, new eastbound and westbound highway traffic lanes were constructed on the south side of the 174, between Blair Road and Montreal Road to create space for the LRT guideway. Crews and equipment in the area, are now removing the asphalt and concrete from the old highway in the median. This work is occurring daytime and overnight until September.
 
Montréal Station
In January, crews and equipment began building a new bridge within the median of OR174 across Montreal Road, at the Highway 174 Interchange. This new bridge is required to create enough space for the LRT guideway and the new Montréal Station.
 
Through March, construction activities for the bridge include excavation and drilling caissons – part of the bridge foundations. From March through June, activities will include the completion of the bridge’s columns, abutments, and pier caps. This will require lane reductions along Montreal Road.

a653497f-53df-46dc-86e3-068124b04901.jpg

Jeanne d’Arc Boulevard
In November 2020, crews and equipment began work to modify the access to Jeanne d’Arc on-ramps at OR174.  This is required to create safer connections for pedestrians and cyclists on the Jeanne d’Arc bridge. While this work continues, there will also be on-going electrical and utility work required prior to the construction of the new Jeanne d’Arc LRT station, beginning in May 2021.  In addition, work on the guideway including the installation of drainage in the median between Sir George Etienne Parkway to Orléans Boulevard Overpass began in February. This work will continue throughout the year.
 
Orléans Boulevard
Work continues at Orléans Boulevard, north and south of the 174, to relocate utilities, including a watermain, storm and sanitary sewer and gas line.  On the west side of Orléans Boulevard, a culvert to improve drainage will be installed. This work will continue through June 2021.Trim
A new watermain and sewer line is being installed to service the future Trim LRT Station and bus
facility. At the same time, construction of a new eastbound off-ramp, and a future realignment of Trim
Road will begin with topsoil removal, embankment, and granular placement.

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A road closure at Dairy Drive, from the traffic circle of Trim Road, to the Agropur Cooperative began in February. The Agropur Cooperative will remain accessible via Old Montreal Road (east of Trim Road). Closure of South Frontage, between the OC Transpo Park and Ride / Trim Station and Dairy Drive will continue until July 2021. The OC Transpo Park and Ride and Trim Station access to southbound Trim Road will be maintained via the construction of a detour route.   These activities are required to create a cul de sac which will facilitate the work for the future site of Trim Station.

Place d’Orléans
Beginning in April, significant construction activities will begin near Place d’Orléans with rock excavation. Hoe-ramming will be required to break up the bedrock. Excavation is also required to realign the 174 north and south of the existing highway to move traffic to make room for the work to build the guideway and the Place d’Orléans Station. There will be further rock excavation required for the guideway and station. The rock breaking and excavation work will continue through July 2021. Utilities work, such as drainage installation, will
continue through the Spring this year.

e1dc595d-7e96-43a3-a429-9447d6ba6d13.jpg

Trim
A new watermain and sewer line is being installed to service the future Trim LRT Station and bus
facility. At the same time, construction of a new eastbound off-ramp, and a future realignment of Trim
Road will begin with topsoil removal, embankment, and granular placement.
 
A road closure at Dairy Drive, from the traffic circle of Trim Road, to the Agropur Cooperative began in February. The Agropur Cooperative will remain accessible via Old Montreal Road (east of Trim Road). Closure of South Frontage, between the OC Transpo Park and Ride / Trim Station and Dairy Drive will continue until July 2021. The OC Transpo Park and Ride and Trim Station access to southbound Trim Road will be maintained via the construction of a detour route.   These activities are required to create a cul de sac which will facilitate the work for the future site of Trim Station.

dfb48228-d774-48f7-8673-a5fc613908d7.jpg

 

COMMUNITY IMPACTS

Typically, most work is scheduled to occur from 7:00 am to 6:00 pm, Monday to Friday. There will be requirements for overnight work across the entire corridor, and some intermittent weekend work, Throughout the year.
 
Noise and vibration from trucks and heavy equipment is expected.
 
Site lighting for overnight work will be required. 
 
All pedestrian, cycling, bus, and vehicular movements will generally be maintained during construction apart from highway ramp closures. Pedestrians and cyclists should use extra caution when localized detours are in place.
 
Motorists should adhere to detours, traffic control signage, posted speed limits, and use extra caution as traffic patterns change. Motorists should use caution and allow for added travel time when moving through active construction corridors.
 

CONTACT US

This notice provides an overview of activities expected to occur until June 2021. Specific timing of activities, including road closures or detours, overnight activities or other major works, will be communicated in advance via the Stage 2 project e-newsletter.
 
 
For questions, please contact:
Dianna Ashworth
Stakeholder Relations, Rail Construction Program
City of Ottawa
[email protected] 
www.ottawa.ca/stage2

Place d’Orléans
Beginning in April, significant construction activities will begin near Place d’Orléans with rock excavation. Hoe-ramming will be required to break up the bedrock. Excavation is also required to realign the 174 north and south of the existing highway to move traffic to make room for the work to build the guideway and the Place d’Orléans Station. There will be further rock excavation required for the guideway and station. The rock breaking and excavation work will continue through July 2021. Utilities work, such as drainage installation, will
continue through the Spring this year.

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O-Train West Extension: Construction Activities and Community Impacts  

Ward 15 – Tunney’s Pasture to Sherbourne Stations

90-Day Lookahead - March to June 2021

The O-Train West Extension is one of the three major extensions to Ottawa’s Stage 2 O-Train Light Rail Transit (LRT) Project. The extension will add over 15 km of new rail and 11 new stations between Tunney’s Pasture to Moodie Drive and to Algonquin Station. The O-Train West Extension will eliminate approximately 450,000 annual bus trips from the Sir John A. MacDonald (SJAM) Parkway. It also comprises a maintenance and storage facility, 10 new bridges, 14 rehabilitated bridges and 2 tunnels.

Important progress will be made this year on this exciting project. Construction crews and equipment are continuing work to complete drainage, utilities relocation, structural and road works, and tunnel construction in the areas surrounding the future sites of Westboro, Kìchì Sìbì and Sherbourne stations. 

This notice provides an overview of construction activities that will take place in Ward 15 as well as the expected community impacts including traffic, pedestrian and cyclist detours, increased noise and vibrations from construction crews, vehicles, and equipment as well as intermittent weekend and overnight work. 
 

MAJOR WORKS

Tunney’s Pasture Station area
Construction work continues on the deck of the Goldenrod Bridge at Tunney’s Pasture, which will be followed by the installation of parapets and railings. The bridge is expected to be completed in July 2021. Once completed, the bridge will remain open for pedestrians, cyclists, and bus only traffic during construction.

b03ad67b-81de-4378-a9d9-9276b46a0630.png

Westboro Station area
At Churchill Avenue North at the SJAM Parkway, road and pedestrian detours will be maintained for the continued construction of the Churchill pedestrian underpass which is expected to be completed in the Spring 2022.

                       b7f171da-ee7e-474c-98fb-e466c7965b61.jpg

Kìchì Sìbì Station area
The Roosevelt Pedestrian Bridge, connecting Workman and Roosevelt Avenues will be demolished in May. Pedestrian detours, east to Churchill Avenue and west to the SJAM parkway, will be maintained once the bridge is removed. Work to install these detours as well as utilities relocation will begin in March.

At Kitchissippi Lookout, the following work will be taking place until June: utilities relocation at Atlantis Avenue, drainage work, widening of the SJAM Parkway westbound lane and intersection roadwork at the median turning lanes. Motorists can expect temporary lane closures. 

Sir John A. Macdonald Parkway (SJAM)
Installation of excavation support is ongoing for the SJAM Parkway tunnel between Cleary Avenue and Rochester Park. The tunnel will eventually travel between Kìchì Sìbì and Lincoln Fields stations travelling underneath the SJAM and Byron Linear Park. The slurry plant near 655 Richmond Road is producing slurry required for the construction of slurry walls, which will support tunnel excavation. Several trucks per day will bring materials to service the slurry plant, accessing the site from the SJAM Parkway. The excavated material from the slurry walls will be hauled to slurry pits at Rochester Field, and then loaded out and transported to an approved landfill site. The slurry plant will remain operational into 2022. 

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COMMUNITY IMPACTS

Typically, most work is scheduled to occur from 7:00 am to 6:00 pm, Monday to Friday. There will be requirements for overnight work across the entire corridor, and some intermittent weekend work. 

Noise and vibration from trucks and heavy equipment is expected. In addition, noise and vibration levels resulting from this work are monitored and reported to the City to ensure they are within limits established for the Project.

Site lighting for overnight work will be required.  

Motorists should adhere to detours, traffic control signage, posted speed limits, and use extra caution as traffic patterns change. Motorists should use caution and allow for added travel time when moving through active construction corridors. 

Pedestrians and cyclists should use extra caution when localized detours are in place. The safety of workers and the public is paramount. Construction zone signage and fencing must be respected at all times. 

Your patience during construction is an integral part of the success of the project. 

CONTACT US

This notice provides an overview of activities expected to occur until June 2021. Specific timing of activities, including road closures or detours, overnight activities or other major works, will be communicated in advance via the Stage 2 project e-newsletter. 

For other accommodations, or any questions, please contact:
 
Jessica Maxwell
Stakeholder Relations, Rail Construction Program 
City of Ottawa 
[email protected]
www.ottawa.ca/stage2  

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  • 4 weeks later...

Stage 2 O-Train East Extension: Spring 2021 Information Session

O-Train East Extension Overview 

Work is well underway to extend the O-Train East-West Line from Blair Station to Trim Road. The O-Train East extension will see the Light-Rail Transit (LRT) continue from Blair Station to Trim Road, adding 12 kilometres of rail; 5 new stations to the O-Train network at Montreal Road, Jeanne d’Arc Boulevard, Convent Glen, Place d’Orléans, and Trim Road; 4 new bridges; 6 bridges rehabilitated; 1 pedestrian bridge; and 3 major culverts.

The O-Train East Line will travel predominantly within the median of Highway 174 between Blair Road and Trim Road, providing stations that are equal distance from communities on either side.

 

Stage 2 LRT map

 

Here is the plan for the East extension schedule:

 

O-Train East Extension Schedule

 

Looking back at 2020

In 2020, the main objective on the East extension was the relocation of infrastructure, including various utilities such as sewers, hydro lines, watermains, natural gas and telecommunications infrastructure in the OR174 corridor at Green’s Creek, Jeanne d’Arc Boulevard, Orléans Boulevard and Champlain Street to set the stage for the future track and station construction in the median. In November, crews worked over five weeks and weekends to make room for the future Montréal Station and tracks. This work was critical to enable the demolition of the existing bridges over the course of the first weekend in December 2020 and the start of the deep foundation for the station.

 

Montreal Road Bridges Demolition in December 2020
Montreal Road Bridges Demolition in December 2020

 

Fast-forward to 2021

In 2021, heavy construction will take place throughout the East alignment as crews build rail, pedestrian and road bridges, new highway lanes, the rail guideway and begin station construction. While it is exciting to see progress on the LRT project, some of these activities may cause disruptions for area residents, including intermittent night work, traffic detours, site lighting or additional construction vehicles in the area.

The City of Ottawa’s Rail Construction Program continues to closely monitor the COVID-19 situation and is in contact with the constructors about adhering to guidance provided by Ottawa Public Health and the Province of Ontario. Construction schedules and sequencing are subject to change as work progresses, at the discretion of the project contractor.

Should there be any significant changes to this information, and as additional construction activities are scheduled through 2021, the public will be updated via electronic updates. Please sign-up for Stage 2 e-newsletter updates, specifying the extensions and stations of interest, to receive updates targeted for those areas.

Here is what you can expect to occur in 2021 in terms of major activities:

Blair Station to 174 Median Rail Bridge

Work continues to progress on the Blair Station to 174 Median Rail Bridge. The new rail bridge will bring the O-Train East from the north side of the highway into the OR174 median, where the guideway will remain until reaching the terminus station at Trim Road.

In April 2021, girders (horizontal supports for the bridge) will be laid on top of the columns, followed by the installation of decking. The Blair Station to 174 Median Rail Bridge structure will be completed in the Summer 2021, with track work to follow in the Fall 2021.

Roadwork continues on the westbound OR 174 lanes. Anticipated completion of the lanes is September 2021.

 

South side view of the 174 Median Rail Bridge where crews and equipment continue work on the bridge
South side view of the 174 Median Rail Bridge where crews and equipment continue work on the bridge

 

174 Median Rail Bridge to Montreal Road Interchange

Roadwork continues between Blair Road and Montreal Road. Crews and equipment are removing asphalt and concrete as seen in the picture below from the old highway in the median.

Once the rail bridge construction is completed, all traffic on the OR174 will be shifted to its new alignment allowing for guideway construction to begin in the median. This work will take place from April-December 2021.

Currently, eastbound and westbound traffic are directed to the south side of the existing median allowing for the continued construction of the 174 Median Rail bridge. The construction of new westbound lanes on the north side will be completed September 2021.

 

Eastbound aerial view of OR174 west of Montreal Road where crews are breaking up concrete and asphalt remaining from the old highway lanes in the centre median, necessary to create the space required for the LRT guideway.
Eastbound aerial view of OR174 west of Montreal Road where crews are breaking up concrete and asphalt remaining from the old highway lanes in the centre median, necessary to create the space required for the LRT guideway.

 

Montréal Station

Montréal Station will be located above Montreal Road within the median of OR174. Construction on the Montréal Station will start in September 2021 with a completion target date of March 2023.

 

This image is an artistic representation of the Montreal Station design. The final product may not be exactly as shown.
This image is an artistic representation of the Montreal Station design. The final product may not be exactly as shown.

 

Montréal Station  
Bus Connections Yes
Elevators 4
Bike Parking Spaces 40
Benches 4
Fare Gates 8

Crews and equipment continue to work hard to transform the future Montréal Station area. New station decking is being built within the median of the OR174 Interchange, across Montreal Road for the LRT guideway and tracks. The first rail spike is expected to go into the ground in in the Fall east of Montreal Road, a major milestone for the entire Stage 2 project.

Bridge construction and station excavation will continue until September 2021. Construction activities will include the completion of bridge columns, abutments, and pier caps.

Beginning on April 8, commuters will experience traffic impacts on Montreal Road for approximately three months to create a safe work zone. North side vehicular lanes under the OR174 overpass will be closed and south side lanes will be repurposed to accommodate bi-directional traffic. As a result, vehicular lanes will be reduced to one lane in each direction.

All pedestrians and cycling movements will be maintained via the newly improved multi-use pathway on the south side of Montreal Road.

The Montreal Road northwest ramp realignment will take place from June to July 2021 while the guideway (median) work will start in October 2021.

 

Aerial view of Montreal Road Interchange where crews and equipment continue to work in the median prior to start building a new bridge for the Montréal Station
Aerial view of Montreal Road Interchange where crews and equipment continue to work in the median prior to start building a new bridge for the Montréal Station

 

Montreal Road Interchange to Jeanne d’Arc

Westbound OR174 widening between Sir George-Etienne Cartier Parkway and Green’s Creek will start in July 2021 while guideway (median) work will be completed September 2021.

Work on a pedestrian bridge at Green’s Creek recently started and is targeted to be completed in Summer 2021.

Jeanne d’Arc Station

Construction on the future Jeanne d’Arc Station will start in May 2021 with a completion target date of January 2023. The station will be built at-grade with access to elevated boulevard and a multi-use pathway from Fortune Drive will also be accessible from the station.

Improvements to the intersection north of the future station are being made as part of the Stage 2 project. All traffic movement entering or existing the OR 174 will be controlled with a signalized intersection that will provide dedicated pedestrian crossing.

 

This image is an artistic representation of the Jeanne D'Arc Station design. The final product may not be exactly as shown.
This image is an artistic representation of the Jeanne D'Arc Station design. The final product may not be exactly as shown.

 

Jeanne d’Arc Station  
Number of Entrances 2
Fare Gates 8
Elevators 4
Bike Parking Spaces 40
Bus Connections Yes

Crews continue work on Jeanne d’Arc Boulevard on-ramps at OR174 to shift lanes in order to make space for future tracks in the median. Work is to be completed May 2021.

While this work continues, there will also be on-going electrical and utility work required prior to the construction of the new Jeanne d’Arc station. Guideway (median) work continues until September 2021.

Convent Glen Station

Station excavation starts September 2021 while construction on the future Convent Glen Station will start in October 2021 with a completion anticipated in spring 2023. The station will be built at-grade with access to Orléans Boulevard.

The Orléans Boulevard bridge is being reconfigured to allow bi-directional cycle tracks, a MUP, and dedicated bus lanes. Vehicular lanes over the bridge will be reduced to one lane each direction.

 

This image is an artistic representation of the Convent Glen Station design. The final product may not be exactly as shown.
This image is an artistic representation of the Convent Glen Station design. The final product may not be exactly as shown.

 

 

Orléans Boulevard bridge reconfiguration.
Orléans Boulevard bridge reconfiguration.

 

Convent Glen Station  
Number of Entrances 2
Fare Gates 8
Elevators 4
Bike Parking Spaces 40

Work continues at Orléans Boulevard, north and south of the 174, to relocate utilities. On the west side of Orléans Boulevard, a culvert to improve drainage will be installed. This work will continue through June 2021.

Roadwork to facilitate the widening of the OR174 eastbound and westbound will take place from June-August 2021 while guideway (median) work starts September 2021.

 

Eastbound view of the OR174 where crews and equipment continue to work on utilities at Orléans Boulevard.
Eastbound view of the OR174 where crews and equipment continue to work on utilities at Orléans Boulevard.

 

Place d’Orléans Station

Station excavation will begin in May 2021 while construction on the future Place d’Orléans Station will start July 2021 with a completion target date of January 2023.

The station will be built at-grade with access to elevated boulevard and will be connected to Place d’Orléans Bus Rapid Transitway.

 

This image is an artistic representation of the Place D'Orleans Station design. The final product may not be exactly as shown.
This image is an artistic representation of the Place D'Orleans Station design. The final product may not be exactly as shown.

 

Place d’Orléans Station  
Number of Entrances 4
Fare Gates 16
Elevators 6
Escalator 1
Bike Parking Spaces 40
Washrooms Yes
Bus Connections Yes

Significant construction activities will take place near Place d’Orléans during 2021. Excavation will be required to realign the OR174 north and south of the existing highway to move traffic to make room for the work to build the guideway, which will take place from May-August 2021. The widening of OR174 will take place until May 2021.

Utilities work at Place d’Orléans, such as drainage installation, will continue through the Spring 2021.

 

Westbound view of south side OR174 where crews and equipment doing excavation work to prepare for the widening of the OR174.
Westbound view of south side OR174 where crews and equipment doing excavation work to prepare for the widening of the OR174.

 

Tenth Line and Taylor’s Creek areas

Eastbound and westbound OR174 widening will take place from June to September 2021 to make space for the guideway. Once space is created, guideway work will begin in September 2021.

Trim Station

Station excavation starts September 2021 for the future Trim Station. The start of station construction is anticipated in November 2021 with a completion expected in Fall 2023.

The station will be built at-grade with access to an elevated boulevard and will have a 60m pedestrian overpass connecting to the Trim and Park and Ride.

 

This image is an artistic representation of the Trim Station design. The final product may not be exactly as shown.
This image is an artistic representation of the Trim Station design. The final product may not be exactly as shown.

 

Trim Station  
Number of Entrances 2
Fare Gates 6
Elevators 4
Escalator 2
Bike Parking Spaces 60
Washrooms Yes
Bus Connections Yes

In order to make space for the future station, Trim Road needs to be realigned. The OR174 and Trim Road intersection will be shifted to the east and wrap around the east side of the park and ride to join the traffic circle and follow the existing alignment. Pedestrian and cycling connectivity is in the process of being finalized.

 

Planned Trim Road realignment.
Planned Trim Road realignment.

 

A new drainage system is being currently installed to service the future Trim LRT Station and bus facility. Work will continue until October 2021.

At the same time, construction of a new eastbound off-ramp, and a future realignment of Trim Road will begin with topsoil removal, embankment, and granular placement with a completion expected in August 2021.

 

View of Trim Road area at OR174 where crews and equipment doing ground excavation for the installation of new utilities.
View of Trim Road area at OR174 where crews and equipment doing ground excavation for the installation of new utilities.

 

Community Impacts

Residents can expect the following planned mobility impacts during construction. All mobility impacts will be communicated to residents prior to construction starting.

Location Timeline Traffic & Mobility Impacts
Montreal Road (under Highway 174) Two months in Spring to Summer 2021 Two lanes of Montreal Road (one lane each direction) closed under Highway 174.
Highway 174 Weekends from April to September 2021 There will be anticipated weekend impacts on the OR 174. All impacts and traffic plans will be communicated ahead of work beginning.

Most work is scheduled to occur from 7:00 am to 6:00 pm, Monday to Friday. There will be requirements for overnight work and some intermittent weekend work.

Noise and vibration from trucks and heavy equipment is expected. Noise and vibration levels are continuously monitored and reported to the City to ensure they are within the limits established for the Project.

Site lighting for overnight work will be required.

During roadworks, such as the widening of the OR174 to make space for the guideway (median), commuters can expect lane reductions and lane closures. Any impacts of the like will be communicated through public notifications via electronic newsletter.

All pedestrian, cycling, bus, and vehicular movements will generally be maintained during construction apart from highway ramp closures. Pedestrians and cyclists should use extra caution when localized detours are in place.

Motorists should adhere to detours, traffic control signage, posted speed limits, and use extra caution as traffic patterns change. Motorists should use caution and allow for added travel time when moving through active construction corridors.

Stay Informed!

Stage 2 is committed to providing rapid responses to public inquires and proactive communications through newsletters, online articles, videos, social media updates, and public notices.

To receive electronic newsletter updates, please sign up at Ottawa.ca/Stage2Connect.

For any other questions or information regarding upcoming community meetings, please contact [email protected](link sends e-mail).

https://ottawa.ca/en/planning-development-and-construction/major-projects/stage-2-light-rail-transit-project/project-updates#stage-2-o-train-east-extension-spring-2021-information-session

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Your Guide to Stage 2 O-Train West Extension’s Slurry Plant

 
 
 
 

Over the last few months, many Ottawa residents driving along the Sir John A. Macdonald Parkway (SJAM) may have seen what looks like an indoor golf driving range by the sight of a large white tent and two white silos (6m high) in the Kitchissippi Ward, near Cleary Avenue. The structure has nothing to do with sports. In fact, the site is called a slurry plant.

This plant is crucial to building two tunnels, key features of the O-Train’s west extension.

The three-kilometre Parkway tunnel will travel between Kichi Sibi and Lincoln Fields stations travelling underneath the SJAM and Byron Linear Park.

Construction of the tunnels has started, using a cut and cover technique, which in non-construction terms, is a top-down technique rather than a drilling method. Cut and cover construction involves using excavation equipment to dig a large trench or rectangular hole in the ground which is then covered by a concrete deck. Once the deck is in place, surface activity can largely resume as construction crews continue to work below.

What makes the tunnels unique is the use of slurry walls to support the excavation while digging proceeds. If crews just started digging, water and sand in the area would cause the new excavation to cave-in. These special walls made of mixture of bentonite (a type of clay), water, and cement with steel beams placed inside for strength are waterproof and strong enough to keep the hole from caving in when the crews dig the remaining area of the tunnel between the slurry walls.

As the dirt is dug out, it is replaced by slurry which is pumped from the slurry plant to where the digging is occurring through a series of pipes. The weight of the slurry keeps the hole from caving in. The wall is built with a series of panels, hop-scotched, at about one to two panels per day. When a panel is excavated and filled with slurry, steel beams are installed in the wet slurry. In a couple of days, the slurry dries and hardens (just like concrete) and then a portion of the slurry wall is complete. The process then repeats itself to continue to construct more walls.

When the crane continues to dig through the hole, it puts the excavated material (which contains a mixture of soil, bentonite, cement, dirt, water) into a dump truck which then hauls it to a storage and drying area called slurry pits at Rochester Field near the plant location. The slurry waste is left to dry before being trucked to the Trail Road landfill site.

 

The slurry pit process.
The slurry pit process.

 

The slurry wall technique was first introduced during the excavation of the underground rapid transit system in Milan, Italy just after the end of World War II. This new technology became an important component of the top-down tunneling method also known as Metodo Milano ("Milan method"). It made its first rail construction appearance in North America in the 1980s when the Boston subway’s Red Line Northwest Extension project used the modern form of the technology.

Slurry will be mixed in this dedicated plant onsite and the slurry plant will be operational until approximately Spring 2022 when it’s anticipated slurry walls for the tunnels will be fully built.

 

The current slurry plant visible with two white cement silos and a large white tent. The large tent covers tanks, pumps, and other equipment used to produce slurry.
The current slurry plant visible with two white cement silos and a large white tent. The large tent covers tanks, pumps, and other equipment used to produce slurry.

 

 

Aerial westbound view of the slurry plant. It will be operational until approximately April 2022.
Aerial westbound view of the slurry plant. It will be operational until approximately April 2022.
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