Construction Update

This week, crews prepare to install masonry at Pimisi Station, the elevator at Lyon Station and hardware and doors at St-Laurent and Cyrville stations.

Pimisi Station foundation work under Booth Street bridge, looking west toward Bayview Station - Travaux de fondation à la station Pimisi sous le pont de la rue Booth, vue vers l'ouest en direction de la station Bayview

West Stations

Tunney’s Pasture Station 
Construction of the station advances with concrete work on walls at the north side platform area. Crews also continue forming stairs and shoring for the retaining wall.
Bayview Station 

Crews continue underground electrical and mechanical work, installing grade beams for the concourse level, and working on escalator and elevator pits.


Shoring for the retaining wall at Tunney's Pasture Station - Étayage pour le mur de soutènement à la station Tunney's Pasture

Pimisi Station 
Preparations begin this week to install masonry at the lower concourse level. Crews also continue installing rebar and pouring concrete for station walls under Booth Street bridge, pouring slabs and installing duct banks and rough-ins at the lower concourse level.

Parliament Station arch bulkhead installation in progress - Installation de la cloison de l'arche en cours à la station Parlement

Central Stations

Lyon Station cavern
Architectural work advances in the cavern, including concrete pours for curbs and slabs and mechanical rough-ins at the platform level. At the concourse level, crews install a small crane for the elevator installation that begins this week.

Lyon Station west entrance
Concrete work ramps up for the next weeks at the integrated entrance as crews form and pour the upper escalator and stair area walls and raft slab. Crews cure and strip the newly poured deck this week. Chipping takes place at the east vent shaft in anticipation of a complete breakthrough from the surface to the tunnel below.

Lyon Station east entrance 
Integrated entrance construction continues to progress with the installation of structural steel and concrete work including rebar and formwork for perimeter walls at the concourse level. At the HVAC shaft, crews continue waterproofing and begin concrete works.

Parliament Station cavern 
Crews continue work in the cavern, including building and installing bulkheads, arch pours, in addition to shoring and rebar for the next section of deck.

Parliament Station east entrance 
Integrated entrance work is ongoing and includes removal of the shoring system, excavation and removals, hoe ramming and line drilling in phases. At the east vent shaft, waterproofing is completed and crews begin installing rebar and formwork to allow for concrete pours

Rideau Station concrete arch final lining in progress - Application du revêtement de béton final sur l'arche à la station Rideau

Rideau Station cavern
The cavern continues to take shape with crews installing rebar and pouring arches and walls in sections. Construction of bulkheads also occurs.

Rideau Station west entrance
Construction continues at the integrated entrance with the installation of rebar and concrete pours for the raft slab, waterproofing of the north and south walls and shoring removal to allow for the next phase of concrete works to begin. Crews install rebar and pour concrete walls at the HVAC shaft.

Rideau Station east entrance
Progress is visible as station walls and slabs are poured and existing whaler beams are removed as part of the next phase of work.

uOttawa Station
Crews continue installing structural steel, including for the elevator areas, pouring concrete for the north foundation wall at the pedestrian underpass, and working on masonry walls and concourse rough-ins.

East Portal
Work advances at the ramp and includes the installation of rebar, followed by concrete pours of walls and slabs, in addition to mining of the ramp during the daytime and overnight.

Underground duct bank installation and foundation work at Lees Station - Installation des massifs de conduits souterrains et travaux sur la fondation à la station Lees


Lees Station
Foundation work continues for the station’s ancillary building this week, in preparation for the next phase of station construction, including the installation of structural steel. Crews also complete the installation of duct banks.

Hurdman Station
Progress continues to be visible at the station with the installation of structural steel, suspended slab concrete work, curb pours at the stair area and waterproofing, as well as ceiling and electrical work at the ancillary buildings. Internal finishing work, including wiring and tiling, is ongoing at the bus operators’ building.

Progress of composite panel installation at Cyrville Station - Progrès dans l'installation des panneaux composites à la Station Cyrville

Tremblay Station
Crews continue installing windscreen bases, working on roofing, framing the soffit, pulling wires and installing equipment in the communications room. Elevator installation is also being completed this week.

St-Laurent Station
The station continues to take shape with the installation of ceiling panels, doors, hardware and light fixtures, in addition to mechanical and electrical work. Tiling begins in the secondary rooms this week.

Progress at Blair Station-view from guideway looking east into station - Progrès à la station Blair (vue depuis la voie de guidage en direction est vers la station)

Cyrville Station
Construction is ongoing at the station with work on the soffit and stairs, the installation of ceiling panels as well as composite and porcelain panels, glazing, painting, and the installation of doors, light fixtures and hardware, in sections.

Blair Station
Crews are hard at work completing the soffit, glazing, installing composite and porcelain panels and tiles at the lower levels, working on elevators, and installing doors and hardware.

Running tunnel waterproofing ongoing east of Parliament Station - Travaux d'imperméabilisation en cours dans le tunnel à l'est de la station Parlement

Tunnel Construction

In the running tunnel west of Lyon Station cavern, guideway activities are ongoing, including concrete pours for the track slab. In the running tunnel east of Lyon Station, crews pour concrete cable bank walls in preparation for future guideway work in this section. Just east of Parliament Station, waterproofing continues as part of arch final concrete lining work.

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.
  • Pimisi Station structural steel installation.
  • Lyon Station west vent shaft work resumes.
  • Activities at the Parliament Station west entrance resume with architectural work for the parapets.
  • Ongoing overnight work at the Rideau Station west and east entrances, and at the East Portal.
  • Removal of the East Portal roof and beginning of next phase of ramp construction.
  • Ongoing structural steel installation at uOttawa Station requiring overnight lane restrictions.
  • Structural steel installation at Lees Station.
  • Fencing installation on guideway just west of Tremblay Station.
  • Systems installation along the guideway, including Overhead Catenary System poles and wires.
  • Overhead Catenary System energized in phases for ongoing vehicle testing from Belfast Yard to Blair Station.