Construction Update

Final demolition and removals are being completed at Tunney’s Pasture Station and crews begin preliminary station foundation work. In the east, Cyrville Station progress is visible with crews hard at work building the station concourse and roof. On the eastern portion of the guideway, systems and cabling installation continue between Tremblay and Blair stations in preparation for vehicle testing this fall.

Forming walls at Pimisi Station- Construction des murs de la station Pimisi

West Stations

Tunney’s Pasture Station: Crews complete removals and begin station foundation work, including rebar installations for footings.

Bayview Station: Work on the ancillary building, station foundation work, including caisson installation, and ground improvement activities are ongoing. Realignment of the north-south pedestrian and cycling Multi-Use Pathway continues.

Pimisi Station: Construction of the stations walls and footings progress. Crews also install mechanical and electric, and mobilize to being preliminary work on the station’s platform.

Waterproofing arch-Parliament Station - Imperméabilisation de l'arche de la station Parlement

Central Stations

West Portal: Crews install reinforcements in preparation for the next phase of guideway works.

Lyon Station cavern: Crews install rebar and pour concrete on the station’s concourse. Arch final lining work continues.

Lyon Station west entrance: Crews continue pouring floor slabs and slabs for the escalators and stairs, in addition to forming and installing rebar for the entrance walls. Mechanical and electrical works also occur.

Lyon Station east entrance: Crews continue installing rebar and pouring concrete as part of work on the station walls. Outside, crews install formwork for the station entrance and remove rock at the east vent shaft.

Parliament Station cavern: Work on the station L-walls is ongoing; crews install rebar, continue mechanical and electrical works, and pour concrete. Waterproofing of the arch continues

Parliament Station west entrance rock removals - Enlèvement de la roche à l'entrée ouest de la station Parlement

Parliament Station west entrance: Crews install falsework on the parking level. At the station entrance, rock removals and line drilling take place. At the east vent shaft, crews finalize rock removals.

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

Rideau Station cavern: Crews waterproof, install rebar and pour concrete as part of work on the station

Rideau Station west entrance: Crews waterproof, install rebar and formwork for the station walls and also remove existing shoring. Drilling activities and overnight jet grouting continue.

Rideau Station east entrance: Crews install formwork and rebar in preparation of concrete pours of the station’s exterior walls.

East Portal: Crews excavate the ramp and begin reinforcements in preparation for future guideway work.

Traffic restrictions on Rideau Street remain in effect.

uOttawa Station: Work continues on the station suspended slab and walls; crews install rebar in anticipation of concrete pours.

Installing mitigation membrane-Lees Station - Installation de la membrane pour prévenir l'échappement des gaz

East Stations

Lees Station: Crews continue installing the gas mitigation membrane and install rebar and formwork for the raft slab.

Hurdman Station: At the station, crews work on the station walls, install conduits, pour the concourse floor slabs and continue masonry on the block wall. Work continues on the bus operators’ building, including waterproofing and installing the roof.


Installing structural steel-Tremblay Station / Montage des structures d'acier à la station Tremblay

Tremblay Station: Crews continue installing structural steel in sections, work on the parapets and canopy footings. Track work activities are ongoing at the station.

St-Laurent Station: Crews complete masonry, work on the station elevators and install structural steel for the plenum. Work on the hydro room and electrical installations occur. Track work activities are ongoing at the station.

Cyrville Station: Concourse level construction continues with rebar installation, formwork and concrete pours. Crews begin framing the station’s roof, work on parapets and finalize steel installations.

Blair Station: Crews construct the station roof and begin pours, work on the soffit and continue electrical and mechanical installations. Crews also mobilize to begin landscaping activities at the station.

Running tunnel reinforcements - Travaux d'excavation et de renforcement en cours dans le tunnel ferroviaire direction est

Tunnel Excavation and Support

Excavation and installation of reinforcements occur in the running tunnel.

Welding-guideway looking east to West Portal - Soudage en cours sur la voie de guidage vue de l’est en direction du portail ouest


Tunney’s Pasture Station to West Portal: Work occurs on the traction power sub station foundation near Tunney’s Pasture Station, including waterproofing. From Bayview Station to West Portal, crews excavate, install the Overhead Catenary System during the day and overnight and continue flash butt welding.

Mann Avenue Bridge to west of Lees Station: Duct bank, ballast and fence installations continue as part of track work.

Rideau River Transitway Bridge to Blair Station: Ballast installation, pulling rail and welding are ongoing between Rideau River Transitway Bridge and Tremblay Station. In preparation for vehicle testing, crews install systems and cabling between Tremblay and Blair stations.

CPR Bridge pouring pier caps - Installation des couronnements sur le pont du CPR

Other Activities

CPR Bridge near Bayview Station: Bridge reconstruction is ongoing; crews work on the pier caps, abutments and mobilize to begin installing girders.

Mann Avenue Bridge: Crews install caissons and work on pier caps during the day time and overnight as required.

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 girders on the CPR Bridge.
  • Blasting at Parliament Station east entrance.
  • Weekend demolition of the Mann Avenue Bridge and ongoing full closure of the roadway.
  • Vehicle testing and Overhead Catenary System will be energized in phases along the guideway between Belfast Yard and Blair Station.
  • Traction power sub station installations along the alignment.