---
title: "Metrolinx GO Expansion: Delivering a new era of rail in Greater Toronto"
url: "https://www.systra.com/ireland/project/metrolinx-go-expansion-delivering-a-new-era-of-rail-in-greater-toronto/"
type: projects
date_published: 2026-05-19
date_modified: 2026-05-19
schema:
  @type: WebPage
language: en-IE
word_count: 620
reading_time: 4 min
canonical: "https://www.systra.com/ireland/project/metrolinx-go-expansion-delivering-a-new-era-of-rail-in-greater-toronto/"
featured_image: "https://www.systra.com/ireland/wp-content/uploads/sites/24/2026/05/go-expansion3_2380x1500-header-1024x645-1.jpg"
type-market:
  - Transport
project-market:
  - Rail
project-location:
  - International
type-service:
  - Technical Systems
---

# Metrolinx GO Expansion: Delivering a new era of rail in Greater Toronto

![Metrolinx GO Expansion: Delivering a new era of rail in Greater Toronto](https://www.systra.com/ireland/wp-content/uploads/sites/24/2026/05/go-expansion3_2380x1500-header-1024x645-1.jpg)

### A decade-long rail modernisation programme

**In 2022, Metrolinx, the agency that manages and integrates transport in the Greater Toronto and Hamilton Area, (GTHA) started a major program of regional transport upgrades. It chose a program delivery partner consortium in which SYSTRA teams will work for up to 10 years.**

The SYSTRA, Mace and Comtech consortium was officially selected by Metrolinx to
manage the GO Expansion program. The 10-year plan is unprecedented in scope for
Metrolinx and is required to expand and modernise the entire Toronto area rail
network, GO Transit. This highly complex program will provide faster, more
frequent, and better-connected services to the entire region.

Together with our partners, we are integrated as delivery partners with
Metrolinx to manage this complex program of works, which includes the
refurbishment of existing stations and the creation of new ones,
[electrification](https://www.systra.com/uk/services/technical-systems/railway-electrification-ole/)
of existing lines, implementation of new lines, and signalling.

![](https://www.systra.com/uk/wp-content/uploads/sites/11/2025/08/union-station-go-expansion-scaled-2-1024x576.jpg)

_Union station render – GO Expansion_

### Pooling expertise for programme delivery

Together, the three JV partner offices will pool their talents in equal measure:

- SYSTRA’s international railway experience in
  [systems engineering](https://www.systra.com/uk/services/systems-approach/),
  design assurance & coordination, construction, commissioning and preparation
  for operation, as well as in maintenance, will be key to the success of the
  project.

- Mace’s expertise from the mobilisation of its numerous teams integrated in the
  HS2 programme for London’s Euston and Birmingham’s New Street Station, as well
  as its involvement as a delivery partner for the London 2012 Olympic Games.

- And the local knowledge of Comtech, with whom we signed a joint venture in May
  2021, will enable them to integrate seamlessly with Metrolinx and interface
  with their internal program controls and monitoring.

### Supporting regional development with green mobility

The GO Expansion infrastructure program will support the region’s growing
activity through improved rail links and job creation, which will unlock
investment and increase urban development in the province of Ontario. The
combination of green mobility, electric trains, and a large modal shift of
passengers to metro-like trains is expected to significantly improve air quality
throughout the region.

![](https://www.systra.com/uk/wp-content/uploads/sites/11/2025/08/go-expansion-key-improvements-map-1024x600.png)

_GO Expansion – Key Improvements Map_

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