Overview
As of March 2020, Trillium Line South Extension has been under construction for one year. To date, project activities have been focused on advancing station designs, constructing rail-over-road bridges, and completing preparatory work in advance of the Trillium Line shut down on May 3, 2020.
In 2020, work will continue on structures, guideway and elevated guideway work in the south, and the ramp-up of construction activity in the north on the existing line. With the Trillium Line closed, crews will have the access they need to renovate existing stations by lengthening station platforms to accommodate longer trains with greater capacity. It will also allow for the widening of the existing guideway and addition of a second track in sections, which will result in greater operational efficiency of the line once complete.
Finally, 2020 will see the start of construction on eight new stations along the entire alignment. This includes two stations along the existing line, two stations along the Airport Link and four stations along the extension. Overall, the addition of these stations will create enhanced access for communities in the north, while providing new, affordable transit connections to the airport and for residents of Riverside South.
The City of Ottawa’s Rail Construction Program is closely monitoring the COVID-19 situation and is in contact with the constructors about adhering to guidance provided by Ottawa Public Health and the Province of Ontario. Construction schedules and sequencing are subject to change as work progresses, at the discretion of the project contractor. Should there be any significant changes to this information, and as additional construction activities are scheduled through 2020, the public will be updated via electronic updates. Please sign-up for Stage 2 e-newsletter updates, specifying the extensions and stations of interest, to receive updates targeted for those areas.
Here is what construction you can expect to begin or occur in 2020:
Bayview Station to Carling Station
The next phase of construction in this segment will include widening of the guideway in sections, upgrades to Bayview Station and Carling Station and the start of construction on the new Gladstone station. In addition, the Ministry of Transportation of Ontario will be replacing the Highway 417 bridge over the guideway and this work was coordinated with the closure.
| Location | Activity | Impact | Timeline |
|---|---|---|---|
| Bayview Station | Site mobilization, demolition, start of the Trinity pedestrian bridge | Dust and low to medium noise | Starting late spring/early summer |
| Gladstone Station | Rock excavation at the site of the new station followed by start of construction on new station | Medium to high noise impacts along with intermittent vibration associated with rock excavation, within City guidelines | Rock excavation to start late spring; station construction to follow in summer |
| Carling Station | Demolition of existing platform, rock excavation, construction of elevator shaft, start of new platform | Medium to high noise impacts along with intermittent vibration associated with rock excavation, within City guidelines | Starting in summer |
Carleton Station to South Keys Station
The next phase of construction in this segment will include upgrades to existing stations and guideway, construction of a new station at Walkley Road, continuation of construction at the new Walkley Maintenance and Storage Facility, and the renovation and upgrading of existing rail infrastructure.
| Location | Activity | Impact | Timeline |
|---|---|---|---|
| Walkley Yard Maintenance and Storage Facility | Continuation of foundation work; start of construction, including steel structure and start of exterior enclosure | Dust and low to medium noise | Construction of structure to start in summer |
| Rail Bridge Construction at Ellwood Diamond | Preparatory work and caisson drilling followed by construction of piers and pier caps for bridge | Medium noise impacts anticipated | Starting in late spring |
| Dow’s Lake tunnel renovation | Preparatory work; temporary relocation of utilities, construction of temporary access ramp; and, start of foundation and tunnel rehabilitation | Medium noise impacts anticipated | Starting in late spring |
| Carleton Station | Mobilization and site preparation; dismantling of existing platform fixtures and demolition of platform asphalt; temporary at-grade pedestrian crossing to facilitate work on the north and south MUP underpasses; MUP detours | Dust and low to medium noise | Starting in late spring/summer |
| Mooney’s Bay Station | Civil work for electrical; demolition of existing | Dust and low to medium noise | Starting in late spring/summer |
South Keys Station to Limebank Station, including Airport Link
The next phase of construction in this segment will include the start of construction of a new station at South Keys to accommodate transfers to the new Airport Link, completion of seven rail-over-road bridges, the advancement of the 400-metre elevated Airport guideway, and guideway and station construction along the extension and Airport Link.
| Location | Activity | Impact | Timeline |
|---|---|---|---|
| Airport Parkway Rail-over-road Bridge | Column and pier cap construction; installation of span girders | Span girder installation will require overnight work, low noise and dust impacts anticipated | Late spring |
| Uplands Drive Rail-over-road Bridge | Column and pier cap construction; installation of span girders | Span girder installation will require overnight work, low noise and dust impacts anticipated | Late spring |
| Bowesville Road Rail-over-road Bridge | Column and pier cap construction; installation of span girders | Span girder installation will require overnight work, low noise and dust impacts anticipated | Late spring |
| Lester Road Rail-over-road Bridge | Column and pier cap construction; installation of span girders | Span girders: overnight work, low noise and dust impacts anticipated | Summer |
| Leitrim Road Rail-over-road Bridge | Column and pier cap construction; installation of span girders | Span girders: overnight work, low noise and dust impacts anticipated | Summer |
| Earl Armstrong Road Rail-over-road Bridge | Column and pier cap construction; installation of span girders | Span girders: overnight work, low noise and dust impacts anticipated | Summer |
| Limebank Road Rail-over-road Bridge | Column and pier cap construction; | Low noise and dust impacts anticipated | Ongoing |
| Hunt Club Road Rail-over-road Bridge | Preparatory work and start of caissons; construction of centre columns | Low to medium noise and dust impacts anticipated. Centre column construction will require temporary lane closures on Hunt Club Road. | Late summer |
| South Keys Station | Mobilization and site prep; foundation and retaining walls; start of structure and platform; work on MUP underpass | Low to medium noise and dust impacts anticipated | Spring onward |
| Uplands Station | Structural excavation; underground utilities; excavation for north and southbound platforms; foundation work; start of station structure | Low to medium noise and dust impacts anticipated | Spring onward |
| Airport Station | Construction of stair shaft and stairs; construction of station platform | Low to medium noise and dust impacts anticipated | Spring onward |
| Leitrim Station | Mobilization and site prep; utility service; foundations and retaining walls; start of structure and platforms; start of parking and bus loop | Low to medium noise and dust impacts are anticipated | Spring onward |
| Bowesville Station | Continuation of parking and bus loop; mobilization and site prep for station; foundation and retaining walls; start of station structure; start of under-platform pedestrian tunnel | Low to medium noise and dust impacts are anticipated | Summer onward |
| Limebank Station | Mobilization and site prep; foundation and retaining walls; start of the station structure and platform | Low to medium noise and dust impacts are anticipated, within City requirements | Summer onward |
| Airport Elevated Guideway | Continued work on caissons, columns and pier caps; installation of girders | Girders will be installed overnight; low noise and dust impacts are anticipated | Ongoing |
| Construction of new Guideway | Continued work to remove rails, start on foundation and embankments, installation of duct-banks and tracks |
Low to medium noise and dust impacts are anticipated, within City requirements |
Ongoing |
Girder installation at rail-over-road bridges will be completed at night and will create temporary impacts to vehicular traffic while work is proceeding. The construction of a centre column as part of the Hunt Club rail-over-road bridge will require lane reductions, which will impact vehicular traffic. Specific notifications outlining the scope and timing of these impacts communicated before work begins. Members of the travelling public should be aware of and adhere to traffic control signage, posted speed limits and traffic control personnel.
Dates and Hours of Work
Construction activity is primarily scheduled to occur during typical daytime construction hours between 7 am and 10 pm Monday through Friday. Intermittent night work will be required at times but will be communicated in advance through the project website at ottawa.ca/stage2 or by e-newsletter.
Confirmed timeframes and implementation details for key activities will be posted to the project website at ottawa.ca/stage2. Please note the timeframes in this summary are estimated and subject to change.
Mobility Impacts
Pedestrian and cyclist detours will be required. Details will be posted at ottawa.ca/stage2 and shared via e-newsletter. Vehicular traffic may experience delays at times. Cyclists and motorists should be aware of and adhere to traffic control signage, posted speed limits and traffic control personnel.
During the closure of the Trillium Line, OC Transpo will be operating enhanced bus service. Please visit octranspo.com for details and routes.
Stay Informed
Sign up for the Stage 2 e-Newsletter to stay up-to-date with project progress. Visit ottawa.ca/stage2 to receive station specific updates on construction and project updates.
The safety of our workers and the public is paramount, we thank you for your cooperation and patience during construction.
Comments or Questions?
Was this information helpful? Should you have any questions or comments regarding this update, please contact stage2@ottawa.ca.