From Tuesday May 5 to Thursday, May 14 Barrie line schedules will also be adjusted, and trains will depart and arrive at stations a couple of minutes before or after they are regularly scheduled.

Starting May 16 to May 18, there will be no GO Transit service between Downsview Park GO and Union Station as we carry out important construction to support the future addition of a second track.

Saturday, May 16 to Monday, May 18

GO Trains will run as regularly scheduled between Allandale Waterfront and Downsview Park GO.

If you are travelling between Downsview Park GO and Union Station, please consider these TTC options;

If you’re travelling to Downsview Park GO, from Union Station; take TTC Line 1 north.

If you’re travelling to Union Station, from Downsview Park GO; take TTC Line 1 south.

Regular service resumes Tuesday, May 19, with some trips and schedules adjusted. Please plan ahead.

Plan ahead and check your updated schedules before you travel.

*Barrie Line service will be affected over four weekends in May. In addition to May 2–3 and May 16–18, there are also service adjustments on the May 23–24 and May 30–31 weekends. We encourage you to plan ahead and check schedules before travelling.

How to pay for your trip:

To ensure you are charged the correct fare, please tap your PRESTO, credit or debit card at every point of your journey:

• Before boarding a train, tap on at the station.
• When exiting the train, tap off at your destination station.
• If you are transferring to a bus, tap on when you board and tap off when you exit.
• This helps ensure your fare is calculated accurately throughout your trip. 

Connecting between GO and TTC?

Save with One Fare. One Fare applies when you pay your fare with a physical PRESTO card, PRESTO in Mobile Wallet, or with a contactless credit or debit card. It does not apply for cash fare or ticket products. You must use the same card throughout your entire trip.

What work is happening?

Metrolinx is transforming GO Transit to bring more frequent two-way, all-day service to the Barrie Line seven days a week, so you won't need a schedule because you know the next train will be coming soon. To support the future addition of a second track, key areas of the corridor along the Barrie Line are being expanded. Learn more about this important work and benefits it will bring your future commute

What type of work is happening: 

During the temporary closure of the Barrie line in May, crews will carry out foundational work for a second track and corridor improvements, including installing culverts and signaling works. On the Davenport Diamond Greenway, crews will carry out excavation work, pipe installation, asphalt paving and duct bank installation.

Our infrastructure plan will bring significant, incremental service benefits to create a network with the capacity to deliver service every 15 minutes or better, all-day, in both directions on core routes like the Barrie Line (to Maple GO). 

We know that planned service disruptions can be inconvenient to our customers and communities, but upgrading GO Transit today will bring you more service in the future, giving you more options for getting where you need to go with fewer delays, more travel flexibility, and less time waiting. Learn more about this important work and benefits it will bring your future commute.  

Barrie Line Closure – May 2-3, 2026

We temporarily closed the Barrie line this past weekend to carry out important construction work and necessary maintenance that will support faster, more frequent GO service as part of GO Expansion. 

While service was paused, crews were able to conduct foundational work for a second track and corridor improvements, including installing culverts and signaling works.

Crews also installed pipeline casing for future utilities and rehabilitated 600 feet of track at Aurora GO. This involved replacing ballast, installing new track panels, welding and destressing. At Caledonia GO, crews conducted track realignment to make room for the new platform.

We know that planned service disruptions can be inconvenient to our customers and communities, but upgrading GO Transit today will bring you more service in the future, giving you more options for getting where you need to go with fewer delays, more travel flexibility, and less time waiting.

Our infrastructure plan will bring significant, incremental service benefits to create a network with the capacity to deliver service every 15 minutes or better, all-day, in both directions on core routes like the Barrie line (to Maple GO). 

Thank you for your patience and understanding during construction.

Metrolinx is supporting the life you lead by bringing you all-day, two-way GO train service that fits your schedule. Whether you’re in Toronto, York Region or Simcoe County, life can be busy. You’ve got a lot on your plate, and you’re looking for balance – you’re looking for easier ways to seamlessly get where you need to go. That’s what the Barrie line GO Expansion will offer. From Lake Simcoe to Lake Ontario and everywhere in between, we’ve got you covered.

GO service is expanding to serve you better, with more frequent service, more stations, and more connections. Metrolinx is transforming GO Transit to bring more frequent two-way, all-day service to the Barrie line, seven days a week.

To keep these plans on track, we sometimes work overnight and on weekends, building and updating rail infrastructure, renovating GO stations, building new train platforms and more. Learn more about GO Expansion.

We aim to provide you with plenty of notice when we need to adjust service for construction activity. Please plan your trip in advance.

Work may be adjusted, rescheduled, or extended due to weather conditions or unforeseen circumstances.

Ongoing Station Construction

We are always working to improve stations on our network. For real-time service alerts and station updates.

Connecting to another line?

Learn about upcoming work on:

• Lakeshore East
• Stouffville line
• Lakeshore West
• Kitchener line
• Milton line
• Richmond Hill line