Construction Update

Work on the guideway is really starting to advance right across the alignment. This week, crews have mobilized at Tremblay Station for trackwork activities.  The downtown integrated stations are also seeing real progress. Crews completed the construction of the head house at Parliament Station west entrance this week, and are now moving toward the next phase of activities, including installation of the roof slab.

Forming walls at Pimisi Station - Installation du coffrage sur les murs de la station Pimisi

West Stations

Tunney’s Pasture Station: Crews complete final demolition and removals, and mobilize to begin working on the station foundation and footings.

Bayview Station: Ground improvement activities occur and crews continue work on the ancillary building. The north-south multi-use pathway realignment begins to allow caisson installations to take place.

Pimisi Station: Crews continue foundation work including rebar and formwork installations for station walls and footings. Grading, electrical and mechanical installations also occur.

Lyon Station-concrete and rebar ongoing- Coulage de béton et installation de barres d'armature à la station Lyon

Central Stations

West Portal: Excavation of the ramp is finalized; crews continue to install reinforcements.

Lyon Station cavern: Crews install rebar and pour concrete for the concourse slab and columns. Arch final lining pours are ongoing.

Lyon Station west entrance: Station construction continues to advance; crews install rebar, formwork and pour concrete. Mechanical and electrical installations also occur.

Lyon Station east entrance: At the concourse level, crews continue to install rebar and pour concrete for station walls. At the east vent shaft, rock removal occurs.

Parliament Station cavern: Rebar installation and concrete pours continue in the station. Crews install mechanical and electrical works, and waterproof the arch.

Parliament Station west entrance: Crews complete masonry installations and foundation wall removal. Rebar installation and concrete pours continue on the parking level. At the east vent shaft, line drilling and rock removals occur.

Parliament Station east entrance: Structural steel installation and welding is finalized and crews pour the station stairs. At street level, crews line drill and remove rock in anticipation of blasting in the coming weeks.

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

Rebar installations on L-wall-Rideau Station- Installation des barres d'armature des murs en L à la station Rideau

Rideau Station cavern: Waterproofing, rebar installation and concrete pours continue as part of work on the station L-walls and invert.

Rideau Station west entrance: Crews install rebar, formwork, pour the roof, excavate and continue reinforcements. Overnight jet grouting and drilling occurs.

Rideau Station east entrance: Work on the station walls continues and includes rebar installation and concrete pours.

East Portal: Crews finalize piling and begin excavating the ramp in preparation for future guideway work.

Traffic restrictions on Rideau Street remain in effect.

uOttawa Station: Crews install rebar and pour concrete for the station walls and work on platform is ongoing as the station continues to take shape.

Installing membrane-Lees Station - Installing membrane at Lees Station

East Stations

Lees Station: Crews continue working on the gas mitigation membrane and mobilize to begin rebar installation for the raft slab.

Hurdman Station: At the station, crews install rebar, pour the concourse floor slab and mobilize to begin masonry installation on the block wall. Construction of the bus operators’ building advances.

Structural steel and concrete work-Tremblay Station - Installation de la membrane à la station Lees

Tremblay Station: Station construction continues to advance; crews work on parapets, canopy footings and install structural steel. Trackwork activities are ongoing.

St-Laurent Station: Crews install rebar and pour concrete for the station elevators. Masonry is finalized and work continues on the hydro room. Crews continue electrical work and begin structural steel installation on the plenum. Track work crews begin pulling rail on the westbound track this week.

Cyrville Station: The concourse level continues to progress; crews install rebar and pour concrete. Crews work on the station roof, auxiliary building and parapets. Mechanical and electrical work also occurs.

Blair Station: Crews work on the roof, soffit and install exterior wall panels. Hardscaping activities including utility, catch basin, parking, curb and sidewalk construction are ongoing.

East running tunnel reinforcements - Renforts dans le tunnel est

Tunnel Excavation and Support

Excavation and installation of reinforcements continue in the running tunnel.

OCS foundations_grading-Guideway-CPR bridge to Preston St. - Fondations du système de suspension caténaire et nivellement sur la voie de guidage depuis le pont du CPR jusqu'à la rue Preston


Tunney’s Pasture Station to West Portal: Between Tunney’s Pasture Station and Merton Street, crews continue excavation, grading, and Overhead Catenary System foundation installation during the day and overnight. Crews mobilize to begin flash butt welding as part of trackwork.

Mann Avenue Bridge to west of Lees Station: Trackwork activities continue on this section of the guideway including track welding and ballast installation.

Rideau River Transitway Bridge to Blair Station: Trackwork continues between Rideau River Transitway Bridge and Tremblay Station; activities include installing ballast, pulling rail and welding. Just east of Tremblay Station to Blair Station, crews complete systems and cables installations in preparation for vehicle testing this month.

CPR bridge reconstruction ongoing - Travaux de construction sur le pont du CPR en cours

Other Activities

CPR Bridge near Bayview Station: Crews install formwork for the pier caps. Work on the bridge abutments and ground improvement activities are ongoing.

Mann Avenue Bridge: Work on the reconstruction of the bridge is ongoing and includes caisson installations and work on pier caps.

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.
  • Blasting at Parliament Station east entrance.
  • Overnight lane closures on Rideau Street for jet grouting activities.
  • Weekend demolition of the Mann Avenue Bridge and full closure of the roadway.
  • Vehicle testing and Overhead Catenary System to be electrified in phases along the guideway between Belfast Yard and Blair Station.
  • Traction power sub station installations along the alignment.