Construction Update

Tunney's Pasture bus loop south side backfilled - Côté sud de la zone d'embarquement de Tunney's Pasture remblayé

West Stations

Tunney’s Pasture Station: work on the temporary bus loop continues. Crews are pouring concrete and electrical works are ongoing.

Bayview Station: crews install caissons, part of preliminary station construction. Pedestrians and cyclists will be detoured as part of station construction in the next weeks. Signage has been installed.

Pimisi Station: preliminary station works occur. Activities include station excavation, material removals and caisson installation.

Lyon Station cavern waterproofing - Imperméabilisation de l'espace souterrain de la station Lyon

Central Stations

Lyon Station cavern: Lyon Station construction continues to take shape as crews waterproof the station arch, install shoring for the concourse slab and formwork on centre pillar columns. Mud slab pours continue in preparation for future trackwork activities.

Lyon Station west entrance: with excavation more than halfway complete, blasting, hoe ramming, material removals and support activities are ongoing. Excavation continues at the west vent shaft. Crews install shoring and continue excavation at the east vent shaft.

Lyon Station east entrance: crews install dowels on the ground floor as part of reinforcement work and continue work on the station elevator.

Aerial view of Rideau Station east and west entrances - Vue aérienne des entrées Est et Ouest de la station Rideau

Central Stations

Parliament Station cavern: with excavation complete, crews waterproof the north side L-wall and prepare to begin working on the mud slab, part of preliminary station construction.

Parliament Station west entrance: crews install conduits, rebar and formwork for the escalator walls. At the west vent shaft, crews install hoarding and drill piles. At the east vent shaft, crews mobilize to begin drilling piles.

Parliament Station east entrance: crews install structural steel on the concourse level and continue excavation at the entrance.

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

Rideau Station west entrance: crews install whaler beams, begin excavation and drill micro-piles, part of reinforcement work for the future entrance.

Rideau Station east entrance: crews continue waterproofing, install rebar and complete excavation for installation of the crane as part of upcoming forming activities.

Traffic restrictions on Rideau Street remain in effect.

Demolition and removals at uOttawa Station - Démolition et matériaux excavés à la station uOttawa

Central Stations

uOttawa Station: crews continue demolition and removals during daytime and shoring activities overnight.

Pouring station walls at Tremblay Station - Coulage des murs de la station Tremblay

East Stations

Lees Station: crews demolish existing structures and remove materials to prepare for initial station works.

Closure of Transitway pedestrian access from Lees to uOttawa stations.

Hurdman Station: crews install formwork and grade beams. Work on the escalator and elevator pits is ongoing. Crews continue excavating, remove materials and begin electrical work, part of permanent bus loop construction. Foundation work occurs at the bus operators’ building.

Tremblay Station: crews continue installing slabs as part of foundation work, pour concrete walls and begin watermain work. A temporary pedestrian realignment is in place at VIA Rail Station.

Steel and roof metal deck installations at Blair Station - Installation des structures en acier et de la plate-forme métallique du toit à la station Blair

East Stations

St-Laurent Station: crews install duct banks, pour the fixation slab, and continue backfilling. Demolition of the electrical room begins.

Cyrville Station: crews install station columns and structural steel. Masonry installations occur on the auxiliary building and watermain work takes place for the next few weeks.

Blair Station: crews install structural steel and the station roof metal deck. Backfilling and waterproofing are ongoing. Trackwork occurs in the station including the installation of ballast and concrete ties

Roadheader mining the running tunnel east of Parliament Station - Machine de traçage creusant le tunnel à l'est de la station Parlement

Tunnel Excavation and Support

Running tunnel east of Parliament Station: excavation of the running tunnel nears completion and moves east toward Rideau Station. Crews continue arch final lining pours as part of permanent concrete works.

Rideau Station cavern: Crocodile Rouge excavates the central pillar ramp as cavern excavation is nearly finalized. Crews install rebar and pour concrete as part of station construction.

At the East Portal, crews begin initial preparations to excavate the ramp to accommodate future guideway and trackwork.

Preparing to install ballast moving west to Tremblay Station - Préparation de l’installation du ballast vers l’ouest jusqu'à la station Tremblay

Guideway – East Portal to Hurdman Station and Tremblay Station to Blair Station

East Portal to Hurdman Station: crews mill and remove asphalt as part of guideway work.

Hurdman Station Elevated Guideway: crews form the east abutment wing walls in preparation for concrete pours.

Belfast Yard to Tremblay Station: crews pull rails, install ballast and begin special trackwork.

St-Laurent to Blair stations: crews continue thermite welding and install ties moving west from Blair Station.

Aerial view of the Booth Street Bridge progress - Vue aérienne de l’avancement des travaux sur le pont de la rue Booth

Scott Street resurfacing: final resurfacing on Scott Street between Smirle Avenue and Merton Street is underway.

Traffic restrictions on Scott Street from Smirle Avenue to Merton Street.

CPR Bridge near Bayview Station: crews continue working on the east abutment and backfilling is ongoing.

Booth Street Bridge: crews begin pouring sidewalks on the bridge.

Queen Street renewal: crews begin pouring concrete curbs and reinstate sections of road as part of street renewal works.

Traffic restrictions on Queen Street between Bay and Metcalfe streets remain in effect.

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 guideway.
  • Bus operators’ building construction at Blair Station.

Did you know?

Did you know that vent shafts will be part of the Confederation Line LRT tunnel construction work?

The vent shafts on Confederation Line are passive and will mainly serve two purposes:

  • Piston relief vents; as in many other big cities, when a train travels through the tunnel it pushes the air ahead of it. The piston relief vents allow the air to be expelled from the tunnel into the street.
  • Emergency ventilation of the tunnel in case of an emergency.

Vent shafts will not operate continuously and will be tested about once a month to ensure proper working conditions. Crews have begun constructing tunnel vent shafts for Lyon, Parliament and Rideau stations.

Find out more about LRT construction at