Some of the most impressive infrastructure projects unfolding in Canada are happening right here in Toronto, including some notably colossal builds with price tags running into the billions.
ReNew Canada magazine has released its annual Top100 Projects Report, highlighting the 100 most significant public works projects underway in the country, and Ontario was very well represented on this year’s list.
For the 2025 list, ReNew has added 15 projects valued at a combined $22 billion, including a pair of prominent builds happening in the country’s most populous province.
In total, 42 of the country’s most expensive infrastructure investments are happening in Ontario, including 18 of the top 25 projects in Canada ranked by cost.
“Infrastructure is the backbone of our society,” said John Tenpenny, editor of ReNew Canada. “These projects don’t just build bridges, hospitals and transit systems; they build opportunities, improve quality of life and ensure our communities thrive.”
Transit remained one of the biggest players among infrastructure works, representing a staggering $121 billion in active spending of the total $300 billion in investment happening across the nation.
Among the major entries for Ontario this year are the Weeneebayko Area Health Authority Redevelopment at a cost of $1.8 billion and the Toronto Western Hospital Patient Tower at $1.1 billion.
Other notable entries present in the list include the $10.9 billion Ontario Line subway project and the $6.4 billion Gordie Howe International Bridge.
Over $153 billion, or more than half of the total $300 billion in infrastructure investments nationwide, are concentrated in Ontario.
Here’s where projects in the province rank in the top 100.
2. GO Expansion – On-Corridor Works: $15,705,000,000
3. Bruce Power Refurbishment: $13,000,000,000
4. Darlington Nuclear Refurbishment: $12,800,000,000
5. Eglinton Crosstown LRT: $12,571,000,000
6. Ontario Line: $10,900,000,000
7. GO Expansion – Early Works: $10,513,000,000
11. TTC Vehicles Program: $7,200,000,000
12. Gordie Howe International Bridge: $6,400,000,000
14. Hazel McCallion LRT: $5,632,000,000
15. Scarborough Subway Extension: $5,500,000,000
16. Centre Block Rehabilitation Project: $5,000,000,000
17. Eglinton Crosstown West Extension: $4,700,000,000
18. Ottawa LRT – Stage 2: $4,675,000,000
20. Accelerated High-Speed Internet Program: $3,889,000,000
22. South Niagara Hospital: $3,600,000,000
23. Finch West LRT: $3,433,000,000
24. Hamilton LRT: $3,400,000,000
25. Don River and Central Waterfront & Connected Projects: $3,000,000,000
30. The Ottawa Hospital New Campus Development: $2,800,000,000
35. New Hospital for Sick Children: $2,400,000,000
42. F.G. Gardiner Expressway Strategic Rehabilitation Plan: $2,200,000,000
43. Trillium Health Partners – Peter Gilgan Mississauga Hospital: $2,000,000,000
49. Weeneebayko Area Health Authority Redevelopment: $1,800,000,000
51. SmartTrack Stations Program: $1,700,000,000
55. CAMH Phase 1D Redevelopment: $1,600,000,000
56. Macdonald Block Reconstruction Project: $1,536,000,000
57. Bloor-Yonge Station Capacity Improvements: $1,500,000,000
60. Port Lands Flood Protection and Enabling Infrastructure: $1,420,000,000
61. Dwyer Hill Training Centre: $1,400,000,000
64. Port Hope Area Initiative: $1,280,000,000
65. THP Broader Redevelopment – Gilgan Family Queensway Health Centre: $1,300,000,000
67. Thunder Bay Correctional Complex: $1,200,000,000
68. Waasigan Transmission Line: $1,200,000,000
70. Toronto Western Hospital Patient Tower: $1,100,000,000
72. West Memorial Building Rehabilitation: $1,000,000,000
73.TerraCanada National Capital Region: $1,000,000,000
74. GO Kitchener Extension: $959,000,000
78. Oneida Energy Storage Project: $900,000,000
84. Advanced Nuclear Materials Research Centre: $800,000,000
86. Ontario Public Safety Radio Network: $765,000,000
92. Bowmanville Extension Project: $730,000,000
98. GO Expansion Project – Off Corridor: $619,000,000
Big names in the infrastructure sector will converge on The Carlu at College Park in Toronto on February 25 to celebrate these massive investments at the annual Top100 Projects Gala Dinner.
