Construction Update

Crews mobilize to begin construction of the Rideau Station west HVAC shaft, while concrete work at the Rideau Station entrances continues to advance.

Concrete work at Pimisi Station - Travaux de béton à la station Pimisi

West Stations

Tunney’s Pasture Station: Preliminary foundation work is ongoing; crews install rebar for station footings and begin caisson work. Crews also complete removals.

Bayview Station: Crews mobilize to begin foundation work including rebar installation and concrete pours. Ground improvement activities are ongoing along with duct bank and grade beam installations.

Pimisi Station: Construction of the station walls is finalized; crews complete waterproofing and concrete work.

Staircase and wall concrete work at Lyon Station west entrance -Travaux de béton sur le puits de l'escalier et les murs à l'entrée ouest de la station Lyon

Central Stations

Lyon Station cavern: Crews install rebar, formwork and pour the concourse slab. Work on the station arch is ongoing with rebar installation and concrete pours. Crews continue shotcrete final lining.

Lyon Station west entrance: Station entrance construction continues to advance; activities include rebar installation and pouring the columns and elevator pit.

Lyon Station east entrance: Station concrete work continues; crews pour station columns and walls. Rock removals resume later this week at the east vent shaft in anticipation of waterproofing and concrete pours in the coming weeks.

Construction of the headhouse at Parliament Station west entrance - Construction de l'édifice de la station à l'entrée ouest de la station Parlement

Parliament Station cavern: Crews install rebar, formwork and pour station L-walls. Waterproofing of the station arch is ongoing in anticipation of concrete work in the coming weeks.

Parliament Station west entrance: Work on the station slab, stairs and parapet wall take place. Crews mobilize to begin installing the winter enclosure. Hoe ramming and rock removals occur at the east vent shaft during the weekend.

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

Rideau Station cavern: Crews install rebar and pour the invert. Waterproofing of the station arch and mechanical and electrical work are ongoing.

Rideau Station west entrance: Crews continue working on the station roof slab; rebar and falsework installation occurs along with concrete pours. Crews also mobilize to begin work on the HVAC shaft.

Rideau Station east entrance: Construction of the concourse walls and slab is ongoing; crews install rebar, formwork and pour concrete.

Rideau Street is closed 24/7 to vehicular traffic as of October 19 to permit works to advance.

uOttawa Station: Crews install rebar and pour concrete for the platform slab and electrical work occurs. Overnight closures of the pedestrian tunnel will be occur (between October 24 and 28).

East Portal: Crews excavate the ramp, install reinforcements and begin working on the mud slab in anticipation of upcoming guideway work.


Rebar installation at Lees Station - Installation de barres d'armature à la station Lees

East Stations

Lees Station: Crews finalize work on the raft slab; activities include rebar installation and concrete pours. Electrical work also occurs.

Hurdman Station: Station construction is ongoing; crews install structural steel and masonry. Work at the bus operators’ building continues with crews installing internal finishes.

Roof installation at Tremblay Station - Installation du toit de la station Tremblay

Tremblay Station: Crews install the station roof and continue mechanical and electrical work. Waterproofing and backfilling also occur.

St-Laurent Station: Crews install structural steel, prepare to begin elevator installation and continue work on the hydro room.

Cyrville Station: Work continues on the station roof and crews install elevators and structural framing for exterior wall panels. Mechanical and electrical work is ongoing.

Blair Station: Crews install exterior wall panels and work on the station escalator. Mechanical and electrical work also continues. At the bus operators’ building, crews install rebar and formwork for footings and walls.

Excavation of the last section of running tunnel - Excavation du dernier tronçon du tunnel ferroviaire

Tunnel Excavation and Support

Crews excavate and install reinforcements in the last section of the running tunnel.

Grading west of Pimisi Station - Nivellement à l'ouest de la station Pimisi


Tunney’s Pasture Station to West Portal: Crews continue to construct the guideway in sections; work includes excavation, backfilling and ballast installation. Duct bank work is ongoing between Pimisi Station and West Portal. Crew mobilize to begin trackwork including crossover track installation.

Mann Avenue Bridge to west of Tremblay Station: Construction of the guideway is ongoing; crews install sewers, duct banks, fencing and ballast. Crews continue pulling rail between Lees and Tremblay stations.

Crews continue rehabilitation of the Mann Avenue Bridge - Les ouvriers poursuivent la restauration du pont de l'avenue Mann

Other Activities

Bayview Bridge: Concrete work continues as part of reconstruction of the Bayview Bridge.

Mann Avenue Bridge: Crews install formwork on the deck in preparation for concrete pours.

Upcoming Construction Activities


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

  • Tunney’s Pasture Station work requiring right turn lane restriction.
  • Installation of traction power sub station on the guideway near Tunney’s Pasture Station and elsewhere along the alignment.
  • Lyon Station HVAC and west vent shaft work resumes.
  • Structural steel installation at uOttawa Station.

Vehicle testing and Overhead Catenary System will be energized in phases along the guideway between Belfast Yard and Blair Station.