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 Eglinton Crosstown LRT at Don Mills Road.

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

Land Acknowledgement

Metrolinx acknowledges that we connect communities by building and operating transit within the traditional lands of the Anishinaabe, the Haudenosaunee and the Huron-Wendat peoples, for whom these lands continue to have great importance.
Treaties between First Nations and governments cover these lands, and the promises contained in these Treaties remain relevant to this day.
Metrolinx and its employees are committed to understanding the history of these lands and the continued impacts of colonization and take responsibility for actions to advance reconciliation.
Metrolinx will continue to seek the knowledge, expertise and experience of Indigenous partners and commits to doing business in a manner that is built on a foundation of trust, respect, and collaboration.