Mining at Avenue Station

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October 10, 2017

Mining is expected to begin in November 2017, and will carry on through to late 2019.

What Work is Happening?

The Eglinton Crosstown includes a 10-kilometre underground portion, between Weston Road and Laird Drive, where 15 below-grade stations are under construction. Eleven will be built using a “cut-and cover” method and four, including Avenue Station, are going to be “mined.” 

Excavation of the entrances at Avenue Station is nearing completion and mining will begin soon.

During mining, crews will excavate from the existing shafts at the station entrance sites and work deep beneath Eglinton Avenue. The mining technique will not be used at every location along the line but is being implemented where geology permits due to its reduced impact at street level.

Advantages of Mining

There are many reasons for mining stations, including fewer disruptions and inconveniences for drivers, residents and businesses. While crews work below the surface, there are minimal changes to traffic, people can come and go that much easier and there is less impact on everyone’s daily lives.

Underground Activities

The primary underground activities for safe and effective excavation include the need to ensure removal of ground water, installation of supports for the excavation, excavation and concrete works.  

As work progresses, it will occur simultaneously underground and at street level. The limited activities visible to the public will include: delivery of materials, removal of soils, equipment and pipes necessary for dewatering and ventilation. 

What You May Experience

In order to take advantage of the mining method, work will need to take place during 24-hour cycles. As a result of construction and associated truck activity, some noise and vibration may be experienced.  

This continuous work will begin November 2017, and carry on through to late 2019.

Noise Reduction Measures

Prior to this work commencing, several noise mitigation measures were explored and a noise and vibration reduction plan has been put in place. Noise barrier walls, ventilation silencers, rubber mats, alternative backup signals, enclosures for pumps and generators as well as careful sequencing of the works to minimize night time delivery and hauling have all been incorporated in order to minimize the impact that construction will have on the local community.

By expediting the construction process, this work also serves to help Metrolinx deliver better transit to the city on time.

Working Together 

Metrolinx and its contractor, Crosslinx Transit Solutions, will work together with the City of Toronto to monitor any situation of concern or disruptions. We know that during construction of this significance, residents will be inconvenienced. We will continue to work hard to keep residents informed as we deliver this important transit project. Thank you for your patience. 

For more information, please contact the West Community Office.