> The Ontario Line - Early Works: Exhibition Station | Metrolinx Engage

Early Works

The Ontario Line - Early Works: Exhibition Station

Ontario Line trains will be above ground at Exhibition Station, which currently accommodates GO Train and VIA rail services as well as freight rail operations. Since GO Expansion Plans call for more GO train services at Exhibition Station, Metrolinx is carrying out early works for the Ontario Line in this area to ensure both of these important transit expansion projects are properly coordinated and completed in a timely manner.

These early works will set the groundwork for other major construction on the Ontario Line project, reducing risk of construction delays to the main P3 contracts by completing the joint corridor work in advance of the main contracts.

The Exhibition Station Early Works Report outlines the purpose of early works, a description of local environmental conditions, potential impacts and proposed mitigation measures.

View the Full Early Works Report

 

Map and legend of early works components at Exhibition Station

 

Existing Unopened Passenger Tunnel Extension and Tunnel Entrance Building

An existing out of service passenger tunnel extension and station entrance will be opened. This newly opened tunnel and entrance with a walkway to Atlantic Avenue will be in service until the new north entrance is completed. The existing platform access at the bottom of Atlantic Avenue will be removed to accommodate construction of the new north GO platform and the GO Track 1 shift. Once the new north entrance is open, the Atlantic Avenue walkway will close and the tunnel extension and vertical access will continue to provide passenger access.

Existing unopened tunnel entrance building - view of the covered walkway to Atlantic Avenue from the west

Existing unopened tunnel entrance building - view of the covered walkway to Atlantic Avenue from the west

Existing unopened tunnel entrance building - view from the east

Existing unopened tunnel entrance building - view from the east

 

New North Entrance

The existing passenger tunnel will be extended north and the new north entrance will be constructed to provide continuous access to the station throughout construction, including future Ontario Line work.

Platforms and GO Tracks

The new north platform will service GO trains temporarily. GO trains will run on the shifted GO Track 1. Once the Ontario Line station is constructed, the western portion of the new north platform will form part of the joint GO-Ontario Line platform, and the eastern portion will be removed. GO trains will continue to run on Track 1, and stop at the new joint GO-Ontario Line platform. The joint platform will allow people transferring from the Ontario Line to the GO Train to walk straight from one to the other without having to go up or down a level.

Pedestrian Bridge

Installation of a temporary pedestrian bridge spanning the rail corridor will provide additional access capacity to reach station platforms and enhance cross-corridor access for trips to and from Liberty Village. The bridge will also reduce potential congestion in the existing tunnel during special events at Exhibition Place and/or Ontario Place. The bridge will stay in place until the Ontario Line is in operation.

Example pedestrian bridge design rendering - Dowling Avenue

Example pedestrian bridge design rendering - Dowling Avenue

 

Example pedestrian bridge design rendering - Dowling Avenue

Example pedestrian bridge design rendering - Dowling Avenue

 

The early works assessment process included the following: 

  • Reviewing and examining early works components and construction activities
  • Understanding local environmental conditions through desktop reviews and field studies
  • Assessing and evaluating potential impacts that early works components and construction activities may have on the environment
  • Proposing mitigation measures to avoid or reduce impacts and monitoring activities to verify effectiveness of mitigation measures
  • Determining any municipal, provincial, federal or other permits and approvals that may be required prior to construction

The Exhibition Station Early Works Report provides the following:

  • A description of the early works
  • A map showing the site of the early works
  • A description of the local environmental conditions at the site of the early works
  • A description of all studies undertaken
  • Metrolinx’s assessment and evaluation of the impacts that the preferred method of carrying out the early works and other methods might have on the environment, and Metrolinx’s criteria for assessment and evaluation of those impacts
  • A description of any measures proposed by Metrolinx for mitigating any negative impacts that the preferred method of carrying out the early works might have on the environment
  • A description of the means Metrolinx proposes to use to monitor or verify the effectiveness of mitigation measures proposed
  • A description of any municipal, provincial, federal or other approvals or permits that may be required for the early works
  • A consultation record

Environmental impacts of the Exhibition Station early works are being assessed in accordance with O. Reg. 341/20.

 

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