Construction Update

This week in the tunnel segment of the alignment, arch rebar work is going in at Rideau Station west entrance while crews are mobilizing to build formwork for curbs and walls inside the Parliament Station cavern. In the east, platform level work is ongoing at St.-Laurent Station and the composite panels at Hurdman Station are installed. In the west, remaining structural steel work takes place at Bayview and Pimisi Station.

Structural steel installation at Bayview Station

West Stations

Tunney’s Pasture Station 
The station’s stairways are being completed with rebar. At the platform level, construction progresses with work on the walls and installation of plumbing and electrical duct banks. Structural steel and falsework continue to shape the concourse.

Bayview Station 
Remaining structural steel and decking is to be installed this week. Mechanical, electrical and sprinkler rough-ins continue. The roofing and painting for the upper ancillary building is ongoing and the water main tie-in will be completed.

Pimisi Station 
Structural steel is set to be completed in the coming weeks. The east concourse slab is poured and concrete work is nearing completion. Work on the elevator shaft is underway and installation of the roof parapets is concluding.

Ongoing concrete works at Rideau Station cavern

Central Stations

Lyon Station cavern
Ongoing work includes elevator and curb concrete pours, along with pours for the topping slab in service corridors.
Installation of washroom fixtures takes place this week as well.

Lyon Station west entrance
Work inside the station is on hold until Kontinuum concludes in the fall. Temporary landscaping around the building including street paving, concrete patching and site clean-up occurs in the meantime.

Lyon Station east entrance
Mechanical mezzanine waterproofing occurs early this week. At the east TVS, the third concrete pour is underway while the second concrete pour cures.

Rebar installation at East Portal

Parliament Station cavern 
Crews mobilize to build formwork for the station’s curbs and walls. Meanwhile, steel installation continues at the elevator shafts, the layout for the staircase progresses and escalator concrete pours are happening at the platform level.

Parliament Station west entrance
The west entrance breakthrough is now complete and crews work on finishing rebar for the mechanical and electrical room and begin roof slab falsework. The mid-entrance progresses with rock excavation concluding and continuing hoe-ramming, rock bolts and shotcrete.

Parliament Station east entrance 
Work on the stairways progress with rebar and forming for the stairs and stair walls, pouring for the stair walls occurs as well. Formwork for the east wall occurs and tunnel adit chipping concludes.

Rideau Station cavern
This week, concrete pours continue for the arch and the south-side structural wall has been poured. Rebar for the arch continues to advance in a westward direction and crews begin to install formwork for the deck.

Rideau Station west entrance
Work on the arch ramps up with waterproofing occurring and forming the arch bulkhead taking place until the end of the week. In addition, arch rebar installation is ongoing for the next weeks.

Rideau Station east entrance
As installation of the escalators comes to an end, crews are busy with other construction activities. Adit excavation continues into the following week and stripping away the HVAC and TVS formwork occurs. Pouring the floor topping in the escalator and mechanical rooms is part of the advancements this week.

Waterproofing occurring at uOttawa Station

East Portal
At the u-trench, rebar installation continues for the slabs and west wall this week. In the tunnel, shotcrete, waterproofing and concrete pours take place.

uOttawa Station
Waterproofing the guideway is complete. Ballast and track through the station has begun, as has installation of the curved plaza ramp. All platforms are expected to be poured this week.

Progress of construction at Lees Station

East Stations

Lees Station
The duct bank work will be completed soon and roof installation progresses. Structural steel installation is ongoing and so is the ancillary building electrical and plumbing work. Crews are also completing the floor in the communication and electrical rooms.

Hurdman Station
This week, work continues on the composite panels for the stairways. The windscreen bases and posts are being installed at the platform level. The second escalator is also scheduled for installation.
Tremblay Station
Platform toppings have started. Framing for the metal composite panels continues and is almost complete. The windscreen posts, elevators and mechanical and electrical rough-ins continue. Crews are also preparing to power up the CBCT (communications-based train control) room.

Metal composite panel framing at Tremblay Station

St-Laurent Station
Platform level work is ongoing, including windscreens, electrical and sprinkler installations. Installation of porcelain panels is ongoing and slab pours are expected to commence in the coming days.

Cyrville Station
The pour for the platform topping is expected to take place this week. There is ongoing work to install the precast concrete and signband conduit. Installation of select light fixtures is continuing and fabrication of select porcelain panels is complete.

Blair Station
Sand blasting on the platform and upper concourse is taking place. Clear coating concrete will commence right after sand blasting. Glazing for the windscreen walls, around stair openings, bridge and the remaining glazing for the elevator shaft will be starting next week after floor protection is complete. Remaining railing posts to be installed soon.

Guideway taking shape in eastern section of the running tunnel

Guideway and Trackwork

Rail pulling progresses between Pimisi Station and West Portal and train-testing continues over a testing area that has now expanded east of St.-Laurent to Tremblay Station. Trackwork activities occur from just east of uOttawa to Lees Station with trackwork continuing in the tunnel as well. Crews are placing dowels for the diamond crossover from Lyon Station to Parliament Station. Work continues on the elevated guideway at Hurdman Station and the Mann Avenue Bridge.

Rail pulling between Pimisi Station and West Portal

Upcoming Construction Activities

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

  • Hoe ramming as part of work on the western section of the guideway.
  • Ongoing overnight work at the Rideau Station west and east entrances, and at the East Portal.
  • Form carrier at the West Portal to be transferred to East Portal.
  • Next stage of work at uOttawa Station requiring overnight lane restrictions.
  • Final work on the pedestrian tunnel at uOttawa Station.
  • Removal of Rideau Street tower crane.
  • Hydro connection work to Hurdman Station requiring lane restriction on Riverside Drive.
  • Systems installation along the guideway, including Overhead Catenary System poles and wires.
  • Watermain work on guideway at St-Laurent Station requiring overnight short-term closure of the St. Laurent Blvd. northbound on-ramp.

Jersey barriers along Nicholas Street will be placed over two consecutive  weekends in late August.