Projects · Rail

Cardiff (Cardiff Central to Cardiff Bay, via Callaghan Square)·Under wayRail

Cardiff Crossrail Phase 1a (tram-train)

  • StageUnder construction (site clearance and enabling works from June 2026, main construction from July 2026)
  • Next milestoneCompletion of phase 1 works (date not given)
  • Last checked1 November 2026
Source: Transport for Wales; Cardiff Council; Rail Business UK →

What has changed on this project, and when

  • Next milestone: Completion of phase 1 works (date not given)2 November 2026 · previously: Completion expected summer 2028 (Cardiff Council, March 2026); Phase 1b (Bay to Pierhead Street) unfunded
  • Stage: Under construction (site clearance and enabling works from June 2026, main construction from July 2026)2 November 2026 · previously: In construction (from June 2026)
  • Value: Not disclosed2 November 2026 · previously: £100 million (Phase 1a)
  • Next milestone: Completion expected summer 2028 (Cardiff Council, March 2026); Phase 1b (Bay to Pierhead Street) unfunded24 September 2026 · previously: Utility diversions and track/platform works; Phase 1b (Bay to Pierhead St) unfunded
  • Stage: In construction (from June 2026)24 September 2026 · previously: Construction started June 2026

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