Confederation Line (Stage 1) | In Service 1.0

[roger1818]

Originally Posted by lrt's friend

It does point to the issue of the safety of boring a tunnel through soft material. Let's face it, this was being done in order to minimize disruption on city streets but should have another approach to tunneling been taken at this location even if it meant the closure of Rideau Street for a year. Can you imagine if the Rideau Canal had been compromised?

I am not convinced cut and cover would have been any safer. Don't forget both the Rideau Centre and the Freiman Mall (and The Bay) are built on this same sand filled crevice. Digging a trench between their foundations could have caused the two malls to fall into each other.

The Rideau station is significantly deeper than the other stations just so they could minimize the risks caused by this crevice.

I guess they could have closed Rideau Street and both malls for a year or two, but I don't think the mall or store owners would be too happy with that decision.

[1overcosc]

Given how fast the early stages of the project moved forward (the current alignment was announced in 2011 and the contract was awarded only 18 months later) I'm starting to suspect that the city cut some corners on the planning & engineering work in order to get shovels in the ground sooner, and that's ultimately why we've had these two sinkholes.

This would mean the City of Ottawa is liable for the problems, not RTG. Nonetheless, RTG paid the costs of fixing the last sinkhole... perhaps because they wanted to butter Ottawa up in hopes of getting the Phase 2 contract.

And it's not just the sinkhole repair costs that we have to worry about here. The contract forces RTG to pay damages to the city if the project isn't open on time; IIRC, it's $1 million dollars for every day past May 25, 2018 that the LRT is not in full revenue service. But if the sinkhole does delay the project, and the sinkhole is determined to be the fault of the City of Ottawa for not conducting thorough enough engineering studies... RTG is probably not liable for those damages.

That said, given that the project was already running early and only a small part of the tunnel is affected (everything west of the Canal is completely fine, Rideau Station is completely fine, and surface works are unaffected) a delay is unlikely, as RTG can probably move work around. However, this does mean than an early opening--which up till now has looked reasonably likely--may be off the table.

[Uhuniau]

Originally Posted by 1overcosc

Given how fast the early stages of the project moved forward (the current alignment was announced in 2011 and the contract was awarded only 18 months later) I'm starting to suspect that the city cut some corners on the planning & engineering work in order to get shovels in the ground sooner, and that's ultimately why we've had these two sinkholes.

The volume of geotechnical work that was done before one shovel of soil or rock was excavated from the tunnel would tend to negate that hypothesis.

[1overcosc]

Originally Posted by Uhuniau

The volume of geotechnical work that was done before one shovel of soil or rock was excavated from the tunnel would tend to negate that hypothesis.

Yes, a lot of geotechnical work was done, but the amount of time they spent doing it was noticeably less than for other tunnel projects in Canada.

I've heard before that the reason for this was that a fair amount of planning work from the 1980s bus tunnel plan was recycled; however, I don't know how true that is. Either way, it's possible the city cut one too many corners on this work.

[acottawa]

Originally Posted by 1overcosc

Given how fast the early stages of the project moved forward (the current alignment was announced in 2011 and the contract was awarded only 18 months later) I'm starting to suspect that the city cut some corners on the planning & engineering work in order to get shovels in the ground sooner, and that's ultimately why we've had these two sinkholes.

This would mean the City of Ottawa is liable for the problems, not RTG. Nonetheless, RTG paid the costs of fixing the last sinkhole... perhaps because they wanted to butter Ottawa up in hopes of getting the Phase 2 contract.

I understand RTG is responsible for all the geotechnical risks, which is why they paid for the first one (and may have to pay for this one as well).

I did a quick search of "subway" and "sinkhole" and found examples all over the place: Vancouver, LA, Seoul, San Francisco.

[eternallyme]

As far as the underground issue, the only way to reasonably bypass such would have been an at-grade or semi-elevated alignment on the Mackenzie King Bridge, but that would necessitated a difficult tunnel to get back under Elgin.

[Kitchissippi]

One of the leading causes of sinkholes is the (over)pumping of groundwater. It's possible they might have drained an ancient aquifer in the bedrock rift, causing the ground to compact and collapse. They probably have an account of how much water they've been pumping out during the excavation, and if it's much higher than average when they got to the softer material in the rift, it could be the smoking gun.

[rocketphish]

Ottawa LRT workers sound safety alarm after tunnel fire
Rideau Transit Group 'confident' conditions safe despite complaints

By Julie Ireton, CBC News Posted: Jun 16, 2016 12:15 PM ET Last Updated: Jun 16, 2016 1:10 PM ET

Four days before a huge sinkhole opened up on Rideau Street as workers excavated the final 50 metres of the underground light rail line below, fire broke out in another section of the downtown tunnel.

Nobody was hurt in either incident, but some workers have contacted CBC News to say they're concerned about health and safety on the project.

"There was a fire and there were no hoses to put it out," said one former worker, who asked not to be named. Information provided by workers has been verified by CBC News.

In a statement, Rideau Transit Group confirmed the June 4 fire at Parliament station at O'Connor and Queen streets, the next stop west of Rideau on the Confederation Line.

"Fire was contained and extinguished by the crew. Once conditions were safe, workers resumed their work," said RTG, the consortium of companies building the Confederation Line.

According to RTG, at any given time up to 875 employees, including subcontractors, are working on the multi-billion dollar project.

The Ministry of Labour told CBC it was notified about the fire two days later, on June 6.

"The ministry has not conducted a visit in response to this notification. The constructor has informed the ministry of precautions taken to prevent a re-occurrence," according to a statement.

But that's not good enough for the former worker who contacted CBC.

After two years working on the LRT project, he said he's found another job because of his concerns over his health and safety. He and another worker also complained to CBC about high levels of carbon monoxide and dust in the tunnel.

The ministry said it has conducted 29 visits to the Ottawa LRT project, 26 of which were unannounced inspections to check for compliance.

The ministry confirmed it has received "several complaints regarding dust since the onset of the project. Orders were issued and have been complied with." The ministry also confirmed it has received one complaint about carbon monoxide in the tunnel.

When it comes to air quality, RTG said air samples are taken three times a day in the tunnel. It also said safety masks are required and air "scrubbers" help clean the air.

"There have been no reports to the safety committee in this regard," RTG said.

In fact, RTG maintains that to date, more than three million hours have been worked on the project with only "10 lost time injuries" — a method used within the industry to calculate the relative frequency of workplace injuries — a rate the consortium said is better than average for heavy construction projects in Ontario.

Asked about the complaints from workers, RTG technical manager Peter Lauch insisted the tunnel is a safe workplace.

"I go into the tunnel quite often. I'm quite comfortable going in there, but I go in as a tourist. I don't spend eight to 12 hours a day there," said Lauch. "We've got a lot of confidence in the safety management program that our contractor has."

Contact Julie Ireton at [email protected] or (613) 288-6478

http://www.cbc.ca/news/canada/ottawa/ottawa-lrt-tunnel-fire-safety-concerns-1.3636876

[rocketphish]

Construction Update
Week of June 13

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Reinforcement struts at Rideau Station west entrance

Central Stations

Update on Rideau Street infrastructure failure:

Repair crews continue working on affected services in the area of the infrastructure failure. Repairs to the sanitary and storm sewer pipes are substantively complete. The next steps will involve backfilling the site to the level of the watermain pipes and allowing crews to begin reinstating the water main.

Pumping continues to remove water from the tunnel and is being treated before being directed into the sanitary sewer system for full treatment at the City’s wastewater treatment plant.

All but only a handful of businesses in the area are up and running with full utilities.

For regular updates on reinstatement work, please visit ottawa.ca.

Traffic restrictions in the area remain in place to help facilitate repair efforts and for the safety of work crews.

Here you see Rideau Station west entrance, where struts have been installed to reinforce the site following the June 8th road collapse. Further construction has been suspended.

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Parliament Station west entrance decorative hoarding installed

Central Stations

Rideau Station cavern: the station begins to take shape as crews continue installing rebar and pouring concrete.

At the East Portal, mobilization for piling occurs overnight as part of reinforcement work in preparation for future guideway construction.

Rideau Station east entrance: station construction progresses as crews waterproof, install mechanical pipes and pour concrete.

Lyon Station cavern: the station concourse level continues to take shape as crews install formwork and rebar, and pour concrete for the deck. At the West Portal, crews mobilize to prepare for crane installation, and excavate the ramp and install reinforcements as part of preliminary guideway work.

Lyon Station west entrance: entrance excavation is ongoing and includes blasting, hoe ramming and material removals. West and east vent shaft work continues and includes material removals and utility relocations.

Lyon Station east entrance: crews prepare for future concrete work and structural steel installation on the station concourse level. Crews install formwork for the elevator walls, escalator pits and station adit wall.

Here you see Parliament Station west entrance, where decorative hoarding has been installed. At the station entrance, crews complete falsework, install rebar and pour concrete for the slab as part station of foundation work. Crews also pour concrete for the station stairs.

Parliament Station cavern: crews waterproof the station in preparation for pouring of the arch final lining. Crews install rebar for the station elevator pit.

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Caisson installation at Bayview Station

West Stations

Here you see Bayview Station, where preliminary station work continues this week with caisson drilling and pouring. MUP users at Bayview may experience short term closures during lifting operations at Bayview Station.

Tunney’s Pasture Station: crews continue working in the temporary bus loop area in preparation for the June 24 West Transitway Service Adjustment. Activities include electrical installations for the supervisors’ building and construction of the wall next to the Transitway.

Pimisi Station: excavation and material removals occur in preparation for future station foundation work.

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Crews continue excavation at uOttawa

East Stations

Here you see uOttawa Station,where crews continue excavating and installing reinforcements, part of initial station work. Demolition of the uOttawa pedestrian tunnel is ongoing.

Lees Station: demolition and material removals continue in preparation for station foundation work.

Closure of Transitway pedestrian access from Lees to uOttawa stations.

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Hurdman Station foundation work including rebar and concrete

East Stations

Here you see Hurdman Station, where construction of the station foundation continues; activities include rebar installation, concrete pours and installation of grade beams. Bus loop construction progresses as crews excavate and complete grading and electrical work. At the bus operators’ building, activities include backfilling and pouring concrete walls in preparation for future masonry work.

Tremblay Station: the station continues to take shape as crews backfill the platform area, pour concrete for the station walls and install structural steel. Work on the sanitary connection is completed.

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Track slab ready for dowels at St-Laurent Station

East Stations

Here you see St-Laurent Station, where station utility work is ongoing as crews continue plumbing, duct bank installation and trenching for the sanitary line. Pouring begins for the concrete slab in the electrical room. Crews begin coring the track slab in preparation for dowel installation, part of station trackwork.

Cyrville Station: station construction progresses as crews install structural steel, the metal roof deck and falsework for the stations’ second floor and concourse levels. Work on the TPSS, the structure which will power the vehicles, continues and includes wiring.

Blair Station: the station continues taking shape as crews finalize structural steel and metal roof deck installations. Utility installations such as plumbing and electrical work continue inside the station building. Crews install motors for the station elevators and backfill the electrical room.

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Tunnel Excavation and Support

Running tunnel east of Parliament Station: excavation in the running tunnel has been suspended due to the June 8th road collapse at Rideau Street near Sussex Drive. For regular updates on reinstatement work, please visit ottawa.ca.

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Grading on guideway moving west from Preston Street

Guideway – Bayview CPR Bridge to Preston Street

Bayview CPR Bridge to Preston Street: work on this section of the guideway begins with fence installation, grading and preliminary excavation moving west.

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Ballast installation on the guideway east of Tremblay Station

Guideway – East Portal to Rideau River Transitway Bridge, Hurdman and Belfast Yard to Blair Station

East Portal to Rideau River Transitway Bridge: guideway construction continues with sewer works, OCS foundations and duct bank installations.

Hurdman Station Elevated Guideway: the elevated guideway platform continues to take shape as crews install formwork and pour concrete.

Here you see ballast installation on the guideway east of Tremblay Station, where crews prepare to pull tracks.

St-Laurent Station to Blair Station: trackwork continues with tamping and thermite welding, in preparation for vehicle testing as early as fall.

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Concrete pours complete at Booth Street Bridge

Other Activities

Here you see Booth Street Bridge, which is taking shape as crews complete concrete pours for the parapet walls and begin work on the bridge’s approach slab.

CPR Bridge near Bayview Station: bridge renewal continues as crews install caissons and pour concrete.

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Upcoming Construction Activities

In the coming weeks, the following construction activities are scheduled to occur:

• Tunney’s Pasture Station construction.
• Bayview Station construction.
• Bayview Bridge renewal.
• Final concrete work in Parliament Station cavern.
• Mann Avenue Bridge rehabilitation.
• Watermain work near St-Laurent Station, along the guideway.
• TPSS deliveries along the alignment.
• Bus operators’ building construction and catch basin/landscaping work at Blair Station.

http://www.ligneconfederationline.ca/construction/construction-update-77/

[1overcosc]

The target opening date in the contract is May 25, 2018.

The next provincial election is on June 14, 2018.

The Confederation Line may very well open smack dab in the middle of a provincial election campaign. This should help draw the attention of provincial politicians to our transit needs.

[PHrenetic]

Note to Rocketphish.....
A while back you wondered at the usefulness of your re-posting the construction updates from the 'official' website into this forum, especially after someone else commented that they had missed your work, after a slight delay.....
Well.... now , especially , you know...., after the June 6 update which you caught before it up and disappeared. Your re-postings form a part of the historical record of this project since i really do suspect and expect that the 'official' communications website itself will up and disappear in its entirety come 2018, since it will no longer be contractually required. IE : all those photos and continuing commentary, slow/delayed/self-serving that they may be, will be gone, except here. I had long ago (including all the way back into the Chiarelli plan era) thought of putting up a website documenting the system(s) development and growth (along the lines of MetroDeMontreal - good site), but other realities infringed.
So.... this well may be it, for all of us.
Welcome to posterity, my friend.
Thank You.

[rocketphish]

Originally Posted by PHrenetic

Note to Rocketphish.....
A while back you wondered at the usefulness of your re-posting the construction updates from the 'official' website into this forum, especially after someone else commented that they had missed your work, after a slight delay.....
Well.... now , especially , you know...., after the June 6 update which you caught before it up and disappeared. Your re-postings form a part of the historical record of this project since i really do suspect and expect that the 'official' communications website itself will up and disappear in its entirety come 2018, since it will no longer be contractually required. IE : all those photos and continuing commentary, slow/delayed/self-serving that they may be, will be gone, except here. I had long ago (including all the way back into the Chiarelli plan era) thought of putting up a website documenting the system(s) development and growth (along the lines of MetroDeMontreal - good site), but other realities infringed.
So.... this well may be it, for all of us.
Welcome to posterity, my friend.
Thank You.

You're welcome, and I'm glad you find it useful. I too am keen on collecting information in a single place to form a useful compendium. The LRT photos may well disappear after some time (I only link back to the originals) but the articles will remain here. For other proposed project plans and renderings, I try to link to copies of the original imagery so that it won't disappear from these threads (as they tend to do over time - many of our earlier threads are devoid of imagery as the links are mostly dead and gone). For me, it's all about preserving a record in one place.

[rocketphish]

Sinkhole barrier prompts city to cover cost of parking, shuttles for ByWard Market

Jon Willing, Ottawa Citizen
Published on: June 17, 2016 | Last Updated: June 17, 2016 8:25 PM EDT

The city will offer a window of free parking in the ByWard Market for the next two Sundays, plus provide free shuttle service from some parts of the suburbs, to help businesses cope with the road closures near the Rideau Street sinkhole.

Two hours of free parking will be available between 8 a.m. and 6 p.m. this Sunday and June 26 at the city parkades at 70 Clarence St. and 141 Clarence St.

There was a month-long delay opening the parkade at 70 Clarence St. after major structural renovations. Two of the three floors are open and the third is expected to open in the coming days. Rideau-Vanier Coun. Mathieu Fleury said extra work on the ramps caused the delay.

A free OC Transpo shuttle service will run hourly from the park-and-rides at Eagleson Road, Fallowfield Road and Trim Road to downtown on the next two Sundays. Transpo will post more information about the shuttles on its website.

Mayor Jim Watson said the free parking and shuttle will cost the city about $40,000. The city can find the money in existing budgets, specifically the parking reserve fund, Watson said.

“It’s really to drive people down here to let them know the businesses are open,” Watson said at the William Street pedestrian mall, connecting the market and Rideau.

The ByWard Market BIA and the Downtown Rideau BIA are happy with the city’s freebies. The two groups met with the city this week to discuss a strategy to help businesses.

All but five businesses have reopened after the disruption to utilities caused by the sinkhole road collapse June 8. The city Friday still had a “don’t drink the water” advisory for 41 and 45 Rideau Street.

Since Rideau-bound OC Transpo buses are instead unloading and loading on the Mackenzie King Bridge, riders need to cut through the Rideau Centre and take the Freiman Bridge through The Bay to access the ByWard Market and businesses on Rideau Street.

The problem, however, is the Freiman pedestrian bridge closes shortly after The Bay closes. The Bay is open Saturday between 9:30 a.m. and 7 p.m., and on Sunday between 10 a.m. and 6 p.m.

There’s some confusion over why the Freiman Bridge can’t be open later than The Bay’s operating hours this weekend. A Bay representative said it’s the Rideau Centre’s decision, but the mall’s general manager, Cindy VanBuskirk, said the mall would take no issue with extending the bridge’s operating hours.

Fleury said Nicholas Street is the best connection for pedestrians between Transpo stops and Rideau when the Freiman Bridge is closed.

The sinkhole is scheduled to be totally filled and paved by the end of next week, ready for traffic again. Watson wasn’t sure if all the sidewalks would be done by that time.

There’s still water in the LRT tunnel from the watermain break. Watson said the city expects another two to four days of work pumping the water out.

[email protected]
twitter.com/JonathanWilling

http://ottawacitizen.com/news/local-news...st-of-parking-shuttles-for-byward-market

[Uhuniau]

Originally Posted by PHrenetic

Note to Rocketphish.....
A while back you wondered at the usefulness of your re-posting the construction updates from the 'official' website into this forum, especially after someone else commented that they had missed your work, after a slight delay.....
...

Welcome to posterity, my friend.
Thank You.

Yes, excellent work for a whole bunch of reasons, not least of which is there is continuing weirdness with the official LRT site that makes those updates often unviewable, depending on where I'm trying to view them from.

[rocketphish]

Last stretch of Transitway to close Friday for conversion to LRT

Matthew Pearson, Ottawa Citizen
Published on: June 17, 2016 | Last Updated: June 17, 2016 5:38 PM EDT

The final stretch of Transitway set to be converted to LRT will close June 24.

The section between Merton Street and Tunney’s Pasture station will close at 7 p.m. A new platform on the station’s upper level will reopen the following Monday.

To facilitate the weekend switch-over, the section of Transitway between Westboro and Tunney’s Pasture stations will also be temporarily closed. All buses will travel along Scott Street.

On June 27, OC Transpo riders will be greeted with a new station layout at Tunney’s.

All eastbound and most southbound riders will now catch the bus at platform A. Route 16 (Main) stops on Scott, while routes 16 (Britannia), 86 (Elmvale) and 176 (LeBreton and Mackenzie King) will use a new stop on Holland, just south of Scott (it replaces the current stop on the south side of Scott, just east of Holland).

Westbound buses to Kanata and Barrhaven will use platforms B, C and D.

Gatineau STO service will be available on Tunney’s Pasture Driveway. Pedestrians will enter the station from either Scott Street or Yarrow Driveway.

The changes will come about a week after summer service adjustments were to take effect.

As of Sunday, school routes will be suspended until the fall and there will be other minor schedule reductions on regular and rush-hour routes until Sept. 4.

OC Transpo is also providing service to local museums and beaches on weekends and holidays throughout the summer until Sept. 5.

Route 129 will serve the Canada Aviation and Space Museum and Route 185 will operate to the Agriculture Museum and Central Experimental Farm. Route 198, which starts June 18, will serve Petrie Island.

Copies of the new schedules are available at OC Transpo Customer Service centres, by calling 613-741-4390 and at octranspo.com.

[email protected]
twitter.com/mpearson78

http://ottawacitizen.com/news/local-news...ay-to-close-friday-for-conversion-to-lrt

[rocketphish]

LRT tunnel work to resume this week after sinkhole flooding
Rideau Street to reopen in a week, according to Rideau Transit Group

CBC News Posted: Jun 20, 2016 6:59 PM ET Last Updated: Jun 20, 2016 6:59 PM ET



Excavation of the tunnel at Rideau Station is set to resume this week, after work stopped on June 8 when the tunnel flooded following a watermain break that led to the sinkhole on Rideau Street.

Water continues to be pumped from the west section of the city's light rail tunnel, wrote city manager Steve Kanellakos Monday in his latest update to Mayor Jim Watson and city councillors.

Some 300 metres of the tunnel flooded to a depth of up to 2.5 metres at its deepest point when the watermain broke.

But Kanellakos said excavation will resume this week and that overall, construction remains on schedule.

Above the tunnel, Enbridge has completed its repairs in the sinkhole and Hydro Ottawa and Bell Canada are scheduled to start work in the sinkhole as soon as the latest round of backfilling is complete, Kanellakos wrote.

While work to repair the watermain has been "substantively completed," Kanellakos noted that inspections have revealed that an approximately 20 m section of the watermain to the west of the sinkhole needs to be replaced.

"This section of pipe was not damaged as a result of the infrastructure failure, but staff have recommended it be replaced as a preventative measure to ensure the stability of the surrounding infrastructure," he wrote.

Earlier today, Ottawa Public Health lifted a precautionary boil water advisory for 41, 45 and 80 Rideau Street after water testing found the tap water safe to drink.

Rideau Transit Group estimates it will be one more week before the Rideau Street intersection where the sinkhole formed can reopen.

Traffic closures remain in place on Rideau Street, Wellington Street, Sussex Drive and Colonel By Drive, to facilitate repair efforts and ensure the safety of crews.

http://www.cbc.ca/news/canada/ottawa/lrt-tunneling-to-resume-ottawa-sinkhole-1.3644498

[rocketphish]

Construction Update
Week of June 20

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Rebar installation in preparation for concrete pours at Rideau Station east entrance

Central Stations

Update on Rideau Street infrastructure failure:

Recovery efforts continue.

Enbridge has completed its repairs. Work has been substantively completed on the watermain repairs.

The two remaining affected utilities, Hydro Ottawa and Bell Canada, are scheduled to start work in the sinkhole as soon as the latest round of backfilling is complete.

Construction at Rideau Station west entrance has resumed.

For regular updates on reinstatement of work and road closures, please visit ottawa.ca.

Rideau Station cavern: the station framework continues taking shape as crews waterproof, install rebar and girders, and pour concrete. At the East Portal ramp, sheet piling occurs overnight and continues for the next several weeks in preparation for future guideway work.

Here you see Rideau Station east entrance, where the station entrance continues taking shape as crews waterproof, install steel and pour concrete as part of ongoing station foundation work.

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Material removals at Lyon Station west entrance

Lyon Station cavern: work continues on the station concourse level as crews install rebar and formwork in preparation for future concrete pours. Additionally, the next phase of station final lining work gets underway as crews mobilize to begin arch final lining. At the West Portal ramp, crews excavate and install reinforcements. By the end of the week, Crocodile Rouge arrives at West Portal to prepare to mine the ramp in the coming weeks.

Here you see Lyon Station west entrance, where crews continue station excavation. Activities include final blasting, hoe ramming and material removals. At the west vent shaft, minor rock removal takes place over the next several weeks in anticipation of further rock removal later in the summer to integrate shaft with underground station. At the east vent shaft, storm and sanitary temporary relocations will commence shortly to allow for further soft ground excavation.

Lyon Station east entrance: the station begins to take shape as crews install formwork and rebar in preparation for concrete work on the concourse level, as well as for the elevator pits.

Parliament Station cavern: crews continue station construction including final waterproofing and pouring slabs and concrete for the L-walls.

Parliament Station west entrance: crews install rebar, formwork and pour concrete as part of work on the station stairs and foundation.

Parliament Station east entrance: the station concourse level progresses as crews install structural steel and columns. Concrete pours for the station stairs are ongoing.

Traffic restrictions on Queen and O’Connor streets remain in effect.

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Decorative hoarding at uOttawa Station

Here you see uOttawa Station, where initial station construction occurs as crews excavate, install reinforcements, work on the mud slab and finalize demolition of sections of the pedestrian tunnel.

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Final works at the Tunney’s Pasture temporary bus loop

West Stations

Here you see Tunney’s Pasture Station, where crews complete final works at the Tunney’s Pasture temporary bus loop in preparation for the June 24 Transitway service adjustment. Activities include electrical work, grading, backfilling and pouring the concrete bus pad on Holland Avenue.

Bayview Station: station foundation work is ongoing as crews drill and pour caissons. Pathway users at Bayview may experience short-term closures during lifting operations at
Bayview Station.

Pimisi Station: crews excavate, remove materials and mobilize to begin work on station footings.

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Lees Station removals

East Stations

Here you see Lees Station, where crews finalize demolition of the existing structures and mobilize to begin installing caissons as part of station foundation work.

Closure of Transitway pedestrian access from Lees to uOttawa stations.

Hurdman Station: crews continue installing grade beams and pouring concrete as part of station foundation work. Excavation, grading and electrical work are ongoing as part of permanent bus loop construction. At the bus operators’ building, crews continue foundation work including backfilling and pouring concrete walls.

Tremblay Station: the station continues to progress and activities include installing structural steel, completing station walls, pouring footings on the north side and backfilling in the platform area. Electrical installations are ongoing.

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St-Laurent Station: crews continue plumbing, installing duct banks and trenching for the sanitary line as part of station utility work. Backfilling is ongoing in preparation for future structural steel work. Crews pour concrete for the electrical room.

Cyrville Station: the station continues to take shape as crews install falsework in preparation for concourse level concrete pours. Structural steel installation occurs overnight. Electrical work for the TPSS, the structure which will power the vehicles, is ongoing. Utility installations have begun as part of work on the auxiliary building.

Here you see Blair Station: station utility work continues and includes plumbing, electrical work and preparations to install catch basins. Crews finalize the station’s metal roof deck, pour concrete, install structural steel and work on the station’s elevators.

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Hurdman Station guideway grading and removals

Guideway – Bayview CPR Bridge to Preston Street, East of uOttawa Station to Rideau River Transitway Bridge, Rideau River Transitway Bridge to east of Hurdman Station and Belfast Yard to Blair Station

Bayview CPR Bridge to Preston Street: preliminary guideway work continues moving west; activities include excavation, asphalt removals and grading.

East of uOttawa Station to Rideau River Transitway Bridge: crews complete duct bank installations, mobilize for OCS pole foundation installations and continue sewer work.

Rideau River Transitway Bridge to east of Hurdman Station: crews begin initial guideway work including backfilling and asphalt removals.

Here you see the Hurdman Station Elevated Guideway, where progress is visible as crews pour the north platform deck.

Belfast Yard to Tremblay Station: crews continue installing ballast and pulling rail to prepare for vehicle testing as early as fall.

St-Laurent Station to Blair Station: trackwork continues on this portion of the guideway including thermite welding, in preparation for vehicle testing as early as fall.

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Work on the Booth Street Bridge approach slab

Other Activities

CPR Bridge near Bayview Station: bridge renewal work is ongoing and includes demolition of the bridge pier. During lifting operations currently underway as part of Bayview Station work and for the safety of all Bayview pathway users, short-term closures will be required. Flaggers are onsite to assist.

Here you see the Booth Street Bridge, which continues taking shape as crews pour concrete for the parapets walls and install rebar for the bridge’s approach slabs.

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Upcoming Construction Activities

In the coming weeks, the following construction activities are scheduled to occur:

• Tunney’s Pasture Station construction.
• Bayview Station construction.
• Blasting at Parliament Station east entrance.
• Final concrete work in Parliament Station cavern.
• Mann Avenue Bridge rehabilitation.
• Watermain work near St-Laurent Station, along the guideway.
• TPSS deliveries along the alignment.
• Bus operators’ building construction and catch basin/landscaping work at Blair Station.

http://www.ligneconfederationline.ca/construction/construction-update-78/

[Capital Shaun]

Originally Posted by rocketphish

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It's interesting how Blair will be one of the few stations that will see significant parts of the previous TransitWay station as part of the new station.

[Kitchissippi]

I'd be tempted to paint that roof to look like giant pieces of bacon.

[1overcosc]

The contrast between the white LRT station and the tacky red of the Transitway bridges doesn't look that great... I hope the city at least repaints the old Transitway infrastructure from red to white.