Construction Update

Progress at Rideau Station east entrance - Progrès des travaux à l'entrée est de la station Rideau

Central Stations

Rideau Station west entrance: excavation is nearly completed and crews continue installing whaler beams as part of reinforcement work. Crews also install formwork in preparation for pouring the concrete slab.

Rideau Station cavern: the station continues to progress as crews waterproof and install rebar. Crews pour the invert, or base level of the tunnel. At the East Portal ramp, sheet piling continues overnight.

The Rideau Station east entrance, shown here, continues to take form as crews install rebar for the station slab. Electrical and mechanical work is ongoing.

Traffic restrictions on Rideau Street remain in effect.

Concrete pours at Parliament Station west entrance - Coulage de béton à l'entrée ouest de la station Parlement

Parliament Station cavern: crews continue installing rebar and pouring concrete for the slab, part of station foundation work.

Pictured here, the Parliament Station west entrance begins to take shape as crews complete falsework and rebar, and prepare to pour concrete. At street level, excavation and reinforcements occur.

Parliament Station east entrance: work continues on the concourse level as crews install rebar and pour concrete for the stairs. Preparations to install structural steel begin.

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

Excavation at uOttawa Station - Excavation à la station uOttawa

Lyon Station cavern: in the station, crews continue installing rebar and formwork for the concrete slab and station columns. Arch final lining concrete pours are ongoing. At the West Portal ramp, crews excavate and install reinforcements.

Lyon Station west entrance: the station entrance work continues as crews waterproof, install reinforcements and pour the mud slab.

Lyon Station east entrance: crews install rebar and pour concrete on the station’s concourse level. On the ground floor, crews continue demolition and install formwork for the elevator walls. Final mechanical works occur.

At uOttawa Station, seen here, construction progresses; activities include excavation for the watermain, and waterproofing and utility installation, part of foundation work.

Tunnel Excavation and Support

Running tunnel east of Parliament: mining of the running tunnel bench is ongoing.

Preparing for foundation work at Pimisi Station - Préparation en vue des travaux de fondation de la station Pimisi.

West Stations

At Pimisi Station, seen here, crews excavate station footings and mobilize to begin caisson installation, part of initial station foundation work.

Bayview Station: station foundation work is ongoing as crews drill and pour caissons. During lifting operations currently underway as part of Bayview Station work and for the safety of all Bayview pathway users, short-term closures of the multi-use pathway will be required. Flaggers are onsite to assist.

Tunney’s Pasture Station: at the temporary bus loop, crews complete final works including electrical installations.


Backfilling and rebar installation at Tremblay Station - Remblayage et installation de barres d'armature à la station Tremblay

East Stations

Lees Station: crews continue working on the station foundation including drilling caissons.

Closure of Transitway pedestrian access from Lees to uOttawa stations.

Hurdman Station: the station foundation is taking shape as crews continue installing grade beams and pier caps. At the permanent bus loop, work occurs on the platforms and crews pour the concrete floor slab, and begin installing masonry at the bus operators’ building.

At Tremblay Station, shown here, the station continues to progress as crews install structural steel, backfill the platform area and prepare to begin masonry. Electrical installations and waterproofing are ongoing.

Coring the fixation slab at St-Laurent Station - Carottage de la dalle de fixation à la station St-Laurent

Pictured here is St-Laurent Station, where crews continue grading and pouring concrete for the escalator. Work for the electrical room, watermain relocation and masonry are ongoing. Trackwork crews continue coring* the fixation slab.


Completing the roof deck at Blair Station - On achève le tablier du toit à la station Blair



Cyrville Station: crews continue to install formwork and rebar on the concourse level. At the west end of the station, structural steel installation begins.

At Blair Station, shown here, crews pour concrete, install structural steel, complete the metal roof deck and work on the station elevators. Plumbing installation and concrete pours for duct banks continue as part of station utility work. Trackwork crews complete tamping activities at the station.


Sewer work and grading west of Lees Station - Travaux sur les conduites d'égout et nivellement à l'ouest de la station Lees

Guideway Construction – Tunney’s Pasture moving east, Bayview CPR Bridge to Preston Street, Mann Avenue Bridge to west of Lees Station, Rideau River Transitway Bridge to east of Hurdman Station and west of Tremblay Station to Blair Station

Tunney’s Pasture moving east: crews begin line drilling and hoe ramming to prepare for the TPSS installation just east of Tunney’s Pasture Station, part of initial guideway work.

Bayview CPR Bridge to Preston Street: crews continue rock removals and begin laying granular as part of guideway work.

Shown here is the area between Mann Avenue Bridge and Lees Station, where crews continue sewer work in preparation for future trackwork along this section of the guideway.

Rideau River Transitway Bridge to east of Hurdman Station: initial guideway work continues with backfilling, asphalt removals and preparations to construct the embankment east of the elevated guideway.

Hurdman Station Elevated Guideway: final work on the concrete deck is being completed and crews begin work on the parapet walls and west abutment.

West of Tremblay Station to Blair Station: crews continue installing ballast and prepare to pull rail west of Tremblay Station. Between St-Laurent and Blair stations, crews complete final alignment and surveying in preparation for vehicle testing as early as the fall.

Progress at the Booth Street Bridge - Les travaux se poursuivent au pont de la rue Booth

Other Activities

CPR Bridge near Bayview Station: crews finalize caisson drilling and mobilize to begin column installation, part of bridge renewal work. During lifting operations currently underway, and for the safety of all Bayview pathway users, short-term pathway closures will be required. Flaggers are onsite to assist.

At the Booth Street Bridge, pictured here, work to reinstate the Booth Street Bridge continues and crews begin utility work.

Upcoming Construction Activities

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

  • Tunney’s Pasture Station construction.
  • Bayview Station construction and short-term pathway realignments.
  • 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.