GO Train

Barrie Line GO Expansion

We're transforming GO Transit to bring more frequent two-way, all-day service to the Barrie Line.


Before a construction project can begin, Metrolinx undertakes various studies to help make decisions about the project. These studies include a business case, which presents evidence and analysis to explain why a project should be built, and an environmental assessment, which identifies potential impacts of a project and proposes ways to avoid, reduce or minimize them.

The following studies and reports were undertaken to support major work required to implement the GO Expansion program on the Barrie Line.

Business Cases

GO Expansion

Read the GO Expansion business case.

Environmental Assessments

GO Electrification

Read the technical report for GO Electrification.

McNaughton Road Grade Separation

Read technical reports for the McNaughton Road Grade Separation.

Bloor-Lansdowne GO Station

Read technical reports about Bloor-Lansdowne GO Station.

Caledonia GO Station

Read technical reports about Caledonia GO Station.

Davenport Diamond Grade Separation

Read technical reports about the Davenport Diamond Grade Separation.

Barrie Rail Corridor Expansion

Read technical reports about the Barrie Rail Corridor Expansion.


Find out what we mean when we talk about some of our reports, studies and processes.

A business case is a report that is written to explain why a project should be built. It includes the benefits that a project would deliver, as well as potential risks. Metrolinx creates business cases for major projects to secure approval before moving on to detailed project studies, such as the Transit Project Assessment Process. Business cases provide evidence to decision-makers, stakeholders, and the public as a crucial part of transparent and evidence-based decision making processes.