Ontario Line
A new 15.6-km subway line in Toronto that will run from Exhibition Place, through downtown, all the way to the Ontario Science Centre.- Projects & Programs
- Ontario Line
- What We're Building
- Lower Don Bridge and Don Yard Portal
Lower Don Bridge
To cross the Don River, a new Ontario Line bridge is being added on the north side of the existing rail bridge, with space for tracks going in both directions.
The work includes:
- building a new bridge north of the existing Lower Don Bridge over the Don Valley Parkway and the Don River to accommodate Ontario Line trains;
- shifting GO tracks in the rail yard west of the bridge to accommodate Ontario Line infrastructure;
- modifying the existing bridge to accommodate future GO track shifts and new Ontario Line infrastructure; and
- relocating and protecting utilities and rail signals in the area.
You can read more about construction work in this area in the Lower Don Bridge and Don Yard Early Works Report.
Don Yard Tunnel Portal
Just west of Cherry Street, the tunnels enter the GO corridor and begin to rise, exiting through tunnel portals on the north side of the GO tracks in the Don Yard.
Making use of the existing GO corridor means we can shrink our footprint and make efficient use of existing transit space, therefore minimizing impacts to surrounding communities and keeping costs down.
Canada Line with a tunnel portal shown in the background - Translink photo.
Renderings and video
Rendering of the future Ontario Line bridge over the lower Don River at dawn. Artist renderings subject to change.
Aerial view of the future Lower Don Bridge and the Don Yard, looking west. Artist renderings subject to change.
Artist's rendering of the future Lower Don Bridge driving south on the Don Valley Parkway.
Rendering of the future Ontario Line Lower Don Bridge at dusk. Artist renderings subject to change.
Artist's video showing the sequence of early works construction activities for the Lower Don Bridge and Don Yard.
Related Projects
Land Acknowledgement
Metrolinx acknowledges that it operates on lands that have been, and continue to be, home to many Indigenous Peoples including the Anishnabeg, the Haudenosaunee and the Huron-Wendat peoples. We are all Treaty people. Many of us have come here as settlers, as immigrants or involuntarily as part of the trans-Atlantic slave trade, in this generation, or generations past. We acknowledge the historic and continued impacts of colonization and the need to work towards meaningful reconciliation with the original caretakers of this land. We acknowledge that Metrolinx operates on territories and lands covered by many treaties that affirm and value the rights of Indigenous communities, Nations and Peoples. We understand the importance of working towards reconciliation with the original caretakers of this land. At Metrolinx, we will conduct business in a manner that is built on a foundation of trust, respect and collaboration.