Construction Update

The month of September on the O-Train Confederation Line construction project opens with notable progress across the alignment. At Rideau Station, rebar work and concrete pours proceed in a westward direction for the tunnel arch. Over at Hurdman Station, work on the south roof gutters and the north roof begins this week, while at Lees Station, crews will also begin the steel decking on the platform level this week.

Progress of the concourse at Tunney’s Pasture Station

West Stations

Tunney’s Pasture Station 
Crews finalize the curb at the concourse level and work on installing the sprinkler system, waterline, and heating tracing. Work on the mechanical and electrical rough-ins continues. The masonry on the outside of the concourse wall is also ongoing.

Bayview Station 
Platform roofing is ongoing for the next few weeks. Crews are also applying intumescent paint to station columns and completing the mechanical and electrical infrastructure at the concourse level.

Pimisi Station 
Crews on the lower concourse are working on pulling wire, electrical equipment installation, and the fire protection and mechanical rough-ins. Crews are also getting one of the station elevators ready for service.

Escalator installation at Rideau Station east entrance

Central Stations

Lyon Station cavern
The majority of work inside the station is on hold until Kontinuum concludes in the fall. Meanwhile, behind the scenes, installation of washroom fixtures concludes this week and masonry and electrical activities continue.

Lyon Station west entrance
The majority of work inside the station is on hold until Kontinuum concludes in the fall. Streetscaping works finishes at the end of the week and the west TVS progresses with wall pours and rebar.

Lyon Station east entrance
The majority of work inside the station is on hold until Kontinuum concludes in the fall. The mechanical mezzanine curb has been poured and the east TVS progresses with rebar installation.

Parliament Station cavern 
Concrete pours occur for the stair walls and miscellaneous curbs at the platform, work progresses for the elevators and masonry block wall installation occurs at the concourse. Conduit installation takes place at both the platform and concourse levels.

Parliament Station west entrance
This week, crew continue to extend waterproofing for the north wall and complete chipping for the south wall so rebar installation can begin. Rebar installation also takes place for the north wall and the station’s escalators are delivered.

Parliament Station east entrance 
Construction activities continue at the adit and include forming and pouring for the next couple of weeks. Falsework and rebar installation occur for the suspended slab, and the west wall is formed and concrete pours begin.

Trackwork progresses at East Portal

Rideau Station cavern
Arch waterproofing is ongoing along with rebar installation and concrete pours. At the concourse, slab rebar, formwork and conduit installation progresses as well.

Rideau Station west entrance
Crews receive the tunnel arch formwork this week and mobilize to assemble it. Waterproofing has taken place for the headwall and rebar installation occurs alongside the formwork assembly for the tunnel arch.

Rideau Station east entrance
Installation of structural steel for the head house wraps up this week, along with waterproofing the adit arch. Work on the HVAC, mechanical and TPSS rooms occur and escalator installation has finished.

East Portal
Crews continue to advance trackwork and work on the duct banks with conduit installation, forming and pouring. Starter walls for the cut and cover tunnel section including rebar, forming, pouring and waterproofing continues.

uOttawa Station
At the concourse level, work is proceeding on the duct, plumbing, and fire protection systems. Crews are also finalizing the roof to achieve a water-tight condition. The installation of ballast and track continues, while the curved plaza ramp excavation has begun.

Crews work inside the ancillary building at Lees Station

East Stations

Lees Station
Crews begin the steel decking at the platform level this week. They’re also completing the electrical, HVAC, and plumbing work in the ancillary building which is expected to be energized around mid-September. On the concourse and platform, crews will be patching the retaining wall this week. Painting of the elevator columns has also been completed.

Hurdman Station
Work on the south roof gutters and the north roof begins this week. In addition, pouring of the topping slabs is scheduled to continue. Crews are also at work installing composite metal panels on one of the stairways.

Tremblay Station
The skylight framing continues, as do glazing and electrical works. Pulling wires, equipment installs and lighting are proceeding towards completion. Crews are also completing the porcelain panels and the windscreen posts. Elevator installation is tentatively scheduled for the second week of September.

Installation of composite metal panels at Hurdman Station

St-Laurent Station
Platform topping pours will be occurring all this week at the station. Other scheduled work includes the mechanical and electrical work in the plenum area of the station. The tunnel ventilation shaft is being completed, including installation of the jet fans.

Cyrville Station
Final grading begins this week and is scheduled to take place through September. Other activities include completion of the topping platform, closing the ceiling near the elevators, waterproofing the platform around one of the elevators, and finalizing elevator room panels.

Blair Station
Boxes and fixtures for the lighting on one of the main stairways has begun and will take place over the first two weeks of September. Crews are also completing glass around the stairs, pedestrian bridge and walls; rail posts; and soffits on one of the stairways. Electrical components are being finalized as well, including running wires for the switch heaters.

Guideway east of Tremblay Station

Guideway and Trackwork

In the east, along with continued LRV testing, Overhead Catenary System (OCS) wires have been strung between Lees and uOttawa stations and trackwork through uOttawa Station is now complete. In the downtown segment of the alignment, crews are continuing to install plinths in the u-trench and have started assembling diamond crossover at Parliament Station. Tamping is now complete between Bayview and Pimisi Station.

Trackwork activities taking place at Pimisi Station

Upcoming Construction Activities

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

  • Tower crane removal from Rideau with a full road closure of Rideau Street from Sussex to Dalhousie.
  • Construction at Parliament Station including hydrovaccing work.
  • Cranes, concrete trucks, and steel erection along the western section of the guideway.
  • Ongoing East Portal works including rebar and concrete work.
  • Station and guideway construction around the University of Ottawa.
  • Ongoing overnight work at Rideau Station west and east entrances.
  • Systems installation along the guideway, including OCS poles and wires.