NOTICE: Downtown Tunnel Excavation

Notice - Avis

Mining of the O-Train Confederation Line downtown tunnel has been ongoing since the fall of 2013.

This notice is to advise that, as excavation of the final segment of the tunnel continues east, ground-borne noise and vibration may be heard and felt in the basement or lower level floors of certain buildings between Parliament and Rideau stations.

WHAT: The excavation of the last section of the running tunnel that began in December 2015 east of Parliament Station below Queen and O’Connor streets has been progressing towards Elgin, Wellington and Sussex streets. Residents and businesses in the vicinity of Wellington Street, between Elgin and Rideau streets, may feel some noise and vibration impacts as the mining advances east towards Rideau Station.

WHEN: Mining of this last section is expected to be completed this summer. Already complete is excavation of the other segments of the running tunnel between Lyon Station and Parliament Station, and east of Rideau Station.

WHY: The 2.5-kilometre downtown tunnel with three stops at Lyon, Parliament and Rideau stations is a key component of the O-Train Confederation Line Light Rail Transit Project, set to be up and running in 2018.

WHERE: Underground along Wellington Street, between Elgin and Rideau streets.

RESIDENTIAL & BUSINESS IMPACTS

  • The method chosen to excavate the tunnel helps to minimize road closures and limits surface-level construction, focusing the efforts underground. Three roadheader machines are currently in use.
  • Some noise and vibration may be heard and felt in the basement or lower level floors of certain buildings as the tunnelling excavation moves along the alignment.
  • The constructors, Rideau Transit Group, regularly monitor the potential impacts of tunnel excavation to ensure there is no damage to building/structures along the alignment. The risk of damage is very low. Rideau Transit Group and their sub-contractors thank you for your continued cooperation.

For further information about this project, please contact the City’s representative:

Alanna Lacroix
Stakeholder Relations,
Ottawa Light Rail Stage 1 and 2 Project Office
[email protected]