Overnight Work in the Byron and Parkway Tunnels

24 11 2022

via Rail Construction Program, City of Ottawa:

Notice of Night Work within the Byron and Parkway Tunnels

November 2022

As part of the Stage 2 O-Train Light Rail Transit (LRT) project, KEV will be pursuing their concrete pour program throughout the winter months in the Byron Tunnel and Parkway Tunnels. The cold weather will require heaters to properly cure the concrete and will be required to operate overnight.


Overnight activity in the Byron and Parkway Tunnels, at various locations.


Monday, November 28, 2022, throughout the winter, until March 31, 2023. This is in addition to daytime activities on weekdays and weekends.


Fueling, equipment maintenance and servicing, and site housekeeping, installation and maintenance of heaters and tarps required to ensure that any concrete that is poured can cure properly, as well as the installation of form work for tunnel walls and roof.


Byron Tunnel, Woodland Avenue to Allison Avenue, and north of Richmond and Redwood Avenue, adjacent to 727 Richmond Avenue. As well as, within the Parkway Tunnel, behind Fraser Avenue, east to Rochester Field.

Anticipated Impacts

Night work is required to fuel, service and maintain equipment, and to meet the schedule on this large and complex project. Heaters are required to maintain a consistent temperature for any poured concrete and forms during the colder winter months. Generators required to run the heaters will be in the tunnels or wrapped in noise barriers.

Site lighting is required to maintain safe working conditions for workers. The use of lights will be minimized where possible and special attention paid to ensure that it is not impacting nearby residences at surface.

The construction work outlined in this notice is subject to change. Work may be delayed or extended due to weather or other unforeseen circumstances.


Accessibility is an important consideration for the Stage 2 LRT project. The Stage 2 team makes every effort to provide access through and around construction sites. If you require special accommodation, please contact stage2@ottawa.ca.

The safety of the public and workers is paramount, and we thank you for your patience during construction.

Future work is required in this area. Additional construction updates, such as changes to work sequencing and the duration or impact of this work will be communicated via the Stage 2 project e-newsletter. To receive these electronic updates please sign up at Ottawa.ca/Stage2 and click ‘Connect with Us’ and select updates for “New Orchard Station and Sherbourne Station”. For other accommodations, or questions, please contact:

Damon Berlin
Stakeholder Relations,
Rail Construction Program
City of Ottawa

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