Source data
Calgary Green Line downtown alignment milestones
Sources checked
- 2021Original Phase 1 funding approved
Downtown deep tunnel from 4 Street SE to Eau Claire Source 1
- 2024Council shortens the first phase
Tunnel retained in the shortened proposal Source 1
- December 2024Alberta publishes Baseline Elevated Concept
10 Avenue S then north on 2 Street SW to 7 Avenue S Source 1
- January 2025Council orders functional planning
Based on the elevated concept Source 1
- June 2025Southeast construction starts
Shepard to Event Centre/Grand Central Station Source 2
- 8 September 2026Executive Committee favours surface route
10 Avenue S to 2 Street SW Source 1
Show 1 more dates
- 22 September 2026City Council approves downtown alignment
Surface segment goes into design, planning and procurement Source 1
The City’s southeast construction package and its downtown route design appear as separate milestones.
Calgary Green Line downtown alignment milestones
The route and funding records describe Phase 1 as Calgary currently presents it. Historical designs show earlier scopes. The downtown route decision authorises the current alignment, while detailed engineering and procurement are continuing.
| Source | |||
|---|---|---|---|
| 2021 | Original Phase 1 funding approved | Downtown deep tunnel from 4 Street SE to Eau Claire | Source 1 |
| 2024 | Council shortens the first phase | Tunnel retained in the shortened proposal | Source 1 |
| December 2024 | Alberta publishes Baseline Elevated Concept | 10 Avenue S then north on 2 Street SW to 7 Avenue S | Source 1 |
| January 2025 | Council orders functional planning | Based on the elevated concept | Source 1 |
| June 2025 | Southeast construction starts | Shepard to Event Centre/Grand Central Station | Source 2 |
| 8 September 2026 | Executive Committee favours surface route | 10 Avenue S to 2 Street SW | Source 1 |
| 22 September 2026 | City Council approves downtown alignment | Surface segment goes into design, planning and procurement | Source 1 |