Future OL Queen Station - hero image

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.

Business cases

Preliminary Design Business Case

The Preliminary Design Business Case provides a clearer picture of how the Ontario Line will benefit riders, communities, and the region as a whole thanks to feedback received through consultations and additional planning and design work that have taken place since the release of the Initial Business Case in 2019.

Read the full Preliminary Design Business Case for the Ontario Line.

Environmental assessments

The Environmental Conditions Report characterizes environmental conditions within the Ontario Line study area through a combination of desktop review and field studies in accordance with industry standard techniques, protocols and guidelines.

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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.