The Holland Bridge expansion continues to take shape this week with rebar installation and concrete pours at the end of the week. Crews begin preparatory work for the bus supervisor building at Tunney’s Pasture Station, with construction beginning next week. At Tremblay Station, painting starts to wrap-up and will be complete in the coming weeks, and Lyon Station continues to progress with final finishes for the Ottawa 2017 multimedia show, Kontinuum.
Tunney’s Pasture Station
Tunney’s Pasture Station: Masonry begins this week, in addition to ongoing work on the foundation and platform walls. Falsework for the concourse slab began last week and continues to take shape, along with platform plumbing and electrical duct banks. The station’s bus supervisor building will start construction next week.
Structural steel installation progresses, along with roofing and painting for the upper ancillary building. At the platform level, work on beams and concrete slabs are ongoing and the north platform pour occurs mid-week. The forming and pouring of stairs continues as well.
Installation of the elevator shafts, structural steel and mechanical and electrical rough-ins are advancing. Installation of roof parapets and door frames are ongoing, and stair pours at the east concourse and intumescent painting occurs as well
Lyon Station cavern
Progress continues to be visible, with crews installing scaffolding, floor protection, and event decorations. Crews also conduct inspections and continue electrical and mechanical work at back-of-house areas.
Lyon Station west entrance
This week, crews are busy with waterproofing, final finishes and temporary landscaping around the remaining perimeter of the entrance. Crews also complete excavation and rock removal for the Tunnel Vent Shaft.
Lyon Station east entrance
The integrated entrance continues to take shape with ongoing elevator installation, crews pouring the topping slab for the escalator machine room and continuing installation of electrical conduit and plumbing.
Parliament Station cavern
Construction advances with the finishing of pit excavation and work for the electrical and plumbing installations at the platform. Curbs are formed for the HVAC room walls at the concourse and crews mobilize to temporarily relocate utilities.
Parliament Station west entrance
Excavation continues this week with whaler beam installation. Other construction consists of waterproofing, concourse slab rebar and shoring, and stripping the HVAC shaft trench wall formwork.
Parliament Station east entrance
New construction activities at the station include work on the foundation, completion of formwork for the escalators and pouring the escalator walls. Tunnel breakthrough and adit hand-chipping continues this week as well.
Rideau Station cavern
Construction is ongoing with wall waterproofing and rebar installation for the HVAC shaft and adit. Crews continue chipping shotcrete at the arch and advance construction for the south side platform slab.
Rideau Station west entrance
This week’s construction entails crews pouring the slab invert, stripping the invert slab bulkhead and chipping away at arch shotcrete.
Rideau Station east entrance
Adit excavation continues this week with rock bolts and shotcrete. Meanwhile, work in the TPSS room takes place, along with shoring removal and rebar, formwork and pours for the north head house wall.
Rebar, formwork and concrete pours continue for the east and west walls of the trench. Waterproofing of the walls is to commence.
The next phase of structural steel installation is underway this week. At the concourse level, the installation of mechanical duct work, sprinkler piping, electrical equipment and wires is all progressing. Installation of the first elevator machine continues to take place and pours for the approach slabs will begin shortly.
As the current phase of structural steel is completed, the next phase is to commence in the coming weeks along with decking on the main roof. Ancillary building roof deck and plumbing work continues, and the remaining section of the service trench and reinforcing steel is to be completed.
Structural steel installation is almost complete at the station. Ongoing activities include porcelain panel installation, framing, escalator and electrical work. Concrete pours for the suspended slabs on the north side are complete and precast concrete at the stairs has commenced.
Crews continue installing composite panel framing, porcelain panels and windscreen posts. Elevator installation, signband conduit and soffit installation are all ongoing. Painting at the station will be completed in the following weeks.
Progress is visible at the station, with electrical and sprinkler installation at the concourse all ongoing, signband conduit installation occurring and porcelain panels being installed at the west platform. Windscreen installation is upcoming.
Crews continue to prepare for the platform topping and install precast concrete. Meanwhile, signband conduit installation is progressing and select light fixtures and railings continue to be installed.
Work is advancing at the station, glazing activities and final finishes on the platform continue, porcelain panels have been installed at most locations and crews continue painting and installing doors and hardware. Testing and commissioning of mechanical equipment is ongoing and installation of stair, handrail and posts begins.
Guideway and Trackwork
The guideway continues to take shape along the alignment: Overhead Catenary System poles are being installed just west of Bayview Station moving east to Pimisi Station, and rails are being pulled and dowels installed in the tunnel moving east. In addition, trackwork activities occur just east of uOttawa Station to Hurdman Station, including pulling rail and ballast tamping.
Upcoming Construction Activities
In the coming weeks, the following construction activities are scheduled to occur:
- Hoe ramming as part of work on the western section of the guideway.
- Ongoing overnight work at the Rideau Station west and east entrances, and at the East Portal.
- Next stage of work at uOttawa Station requiring overnight lane restrictions.
- Final work on the pedestrian tunnel at uOttawa Station.
- Hydro connection work to Hurdman Station requiring lane restriction on Riverside Drive.
- Manhole work as part of guideway activities at intersection of Riverside Drive and Tremblay Road, requiring lane restrictions.
- Fencing installation on guideway just west of Tremblay Station.
- Systems installation along the guideway, including Overhead Catenary System poles and wires.
- Watermain work on guideway at St-Laurent Station requiring overnight short-term closure of the St. Laurent Blvd. northbound on-ramp.
- Skylight framing and glazing at Tremblay Station
- MUP paving between Mann Avenue and Lees Station
- Repairs to Booth Street southeast sidewalk causing daytime sidewalk closures
- Rehabilitation of manholes on Scott Street