Union Station Improvements

We're Transforming Union Station!

Tripling the size of Canada’s busiest transportation hub is an enormous and sometimes messy undertaking. We’re building the infrastructure for two-way, all day transit with 15-minute service or better within the most heavily travelled Metrolinx-owned rail corridors, twice the train trips during rush hour and four times the number of train trips outside of rush hour and on weekends. To support this massive expansion, we’re also adding signalling systems and larger platforms at the station, while improving the tracks and corridors feeding into it.

We’re making these improvements in a 100-year-old building while keeping transit services moving every single day. We’re putting you first by trying to minimize service disruptions during the renovation by tackling the construction in phases.

What's Changing

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Union Station Construction Map

Union Station Construction Map

Platform 21 is now open for GO Transit service, and some platforms are closed for construction

Construction to convert platform 20/21 to a shared space for VIA Rail and GO Transit customers is complete, and GO trains are serving platform 21. Platforms 24 to 27 are closed while important construction to build the new south concourse, two new platforms and two new tracks takes place. This work requires boarding adjustments that may affect how you get to your train.

Here is what you need to know to get on the GO:

When travelling from Union Station:

  • Check departure boards at Union Station before you board your train. Platforms 24-27 are closed, and your regular platform may change. You can also view departure boards live on the schedule departures web page.
  • Platform 20/21 has become a shared platform for VIA Rail and GO Transit customers. Follow directional signs in the York, VIA and Bay Concourses to get to platform 20/21, and to ensure you are on the correct train.
  • If you have accessibility needs, use the elevator in the VIA Concourse to get to platform 20/21.
  • Access to platform 21 is not available through the Bay Concourse. Use the York Concourse and VIA Concourse to access platform 21. 
  • The Bicycle Station located at the walkway on the east side of York Street, near 25 York Street has closed. Bicycle Station members may park in the north bike room, located near the corner of Front Street and York Street.
  • Please be careful around construction equipment and fencing throughout Union Station until construction is complete in the next few years.

We’ve built three new stairways to make it easier and more convenient for VIA and GO Transit customers to get to and from platform 20/21. You’ll find the new stairways located:

  • At the walkway on the west side of York Street.
  • At the York Concourse near the east side of York Street.
  • At the walkway on the east side of Bay Street.

The Union Station Enhancement Project includes the design and construction of transit infrastructure and upgrades at the southernmost part of Union Station, including the addition of new tracks and the expansion of platform 24/25, a new south platform, and a new south concourse to accommodate GO rail service increases, improve customer experience, and enable the planned GO Expansion program.

Richmond Hill line – Some northbound trains depart from platform 3 at Union Station

Earlier this year Union Station’s northern-most platform – platform 3 – became available for service after extensive historic conservation and restoration work. Some Richmond Hill northbound trains are now departing from platform 3 at Union Station while platforms 24-27 are closed for important construction to build the new south concourse, two new platforms, and two new tracks.

When travelling from Union Station:

  • Plan your new route through Union Station in advance and give yourself a little extra time.  
  • Always check departure boards before heading up to the platform. Platform changes can happen at any time.
  • Access platform 3 from the York Concourse, VIA Concourse, Bay Concourse and the walkway on the west side of Bay Street.
  • If you have accessibility needs, please use the elevator in York Concourse to get to and from platform 3.

The elevator in the Scotiabank Arena is out of service for repairs

The elevator is expected to be back in service by next month. If you have accessibility needs, please use the southbound route along Bay Street and across the street to the Union Station Bus Terminal.

We're Making Progress

We’ve finished converting platform 20/21 to a shared platform for VIA Rail and GO Transit services, and improvements include:

  • A new shared platform for VIA Rail and GO Transit customers to board and exit trains.
  • Three new stairways to make it easier and more convenient for VIA Rail and GO Transit customers to get to and from platform 20/21.
  • New customer communications systems with trip information.
  • Several new PRESTO devices at the bottom of the escalators and stairs to platform 20/21.

How You'll Benefit

Once the Union Station Enhancement Project is complete in a few years, improvements will include:

  • Two new wide platforms with canopies and two new tracks, which will increase safety and capacity to serve more trains and get you where you need to go faster. 
  • Several new vertical access points to get you to and from new platforms faster.
  • A new south concourse spanning from Bay to York Streets, with convenient open concept connections into existing Bay, VIA, and York Concourses, Union Square and Scotiabank Arena. 


Bay Concourse Is Now Open!

The newly revitalized Bay Concourse will make it easier for you to spread out, giving you a safer and more comfortable transit experience at Union Station.

New access points will reduce crowding, making your commute even safer and more comfortable. Customers can now access the full length of the platform from the concourse level.

The reopening of Bay Concourse will help support physical distancing while you wait, by providing additional space, PRESTO and ticket vending machines, and more departure boards.

Updated signs have been installed throughout Union Station to help you get to the Bay Concourse, the Union Station Bus Terminal and to help you find accessible and barrier-free paths. Union Station Bus Terminal, which is located on Lakeshore West Boulevard, just east of Bay Street, now offers Megabus and Coach Canada bus service, along with GO bus service.

To access the newly re-opened Bay Concourse and other new connections:

  • Follow signs at Union Station.
  • If you are unsure, ask a station ambassador for assistance.
  • If you require accessible, barrier-free access to platforms, please use the York Concourse.

Elevator access:

  • There are elevators in the Bay Concourse for you to use to access train platforms 10/11.
  • The elevators to access the lower retail level and to get to the TTC are located at the north end of the Bay Concourse.
  • An elevator to get to the Scotiabank Arena entrance is located at the south end of the platform.
  • If you require accessible, barrier-free access to other train platforms, please use the York Concourse. Signs to help you find accessible and barrier-free travel paths have been installed throughout Union Station to help you get where you need to go.
  • Elevators to platforms 24-27 are available from the walkway between the Bay Concourse and York Concourse.

To get to the Union Station Bus Terminal:

  • Stairs and an elevator are available at the south end of the Bay Concourse to provide access to the Scotiabank Arena.
  • Use the pedestrian bridge in the Scotiabank Arena to get to L2 of the Union Station Bus Terminal.

To access the TTC via the Bay Concourse:

  • Escalators and stairs are available to get to the retail level below the Bay Concourse.
  • Elevators are available at the north end of the Bay Concourse to get down to the retail level.
  • Signs are in place to help you get to the TTC entrance, which is located at the north end of the retail level.

photo of Bay Concourse


To access the Union Station Bus Terminal (USBT):

The walkway on the east side of Bay Street has been renovated for easier access into the Union Station Bus Terminal (USBT).

  • The south end of the walkway on the east side of Bay Street connects directly to the Union Station Bus Terminal.
  • The entrance to the Union Station Bus Terminal from the south side of Bay Street is closed until later this summer due to construction in the area.
  • To access the Union Station Bus Terminal from Bay Street, you must enter from the north end of the walkway and walk through to get to the bus terminal.
  • Follow signs in the walkway to get to the bus terminal.
  • Elevators and escalator are available to get to L2 of the bus terminal.
  • You can still enter the Union Station Bus Terminal via the main entrance on Lake Shore Boulevard., just east of Bay Street.
  • Customers coming from Union Station can get to the bus terminal by heading to the Bay Concourse and accessing the Bay Street Bridge from the Scotiabank Arena exit. The Bay Street Bridge connects Scotiabank Arena and Union Station to the second floor of the Union Station Bus Terminal. This is an accessible path.

A future commercial tower at 141 Bay Street is still under construction. For information on the Union Station Bus Terminal, click here.

Stay In The Know

We’ll keep you informed about any impacts to your journey. To get updates sent directly to your inbox or phone, sign up for On the GO alerts at onthegoalerts.gotransit.com.

Click here to learn about GO Expansion plans for Union Station and the adjoining rail corridor.


Updated March 21, 2022 | Rendering subject to change