On Saturday and Sunday, September 12‑13 2026, Greater Montreal will experience traffic and access disruptions as a cycling Grand Prix and an AC/DC concert occur at the same time. Organizers of both the race and the concert have warned that road closures and altered routes will affect commuters and event‑goers throughout the region.

The cycling Grand Prix will occupy several streets as part of its race circuit, requiring temporary blockages and detours for vehicles. Simultaneously, the AC/DC concert will generate additional crowd movement and parking demand near its venue. Because the two events overlap in timing, the transportation network will face compounded pressure.

Construction work already underway across the city adds further difficulty, with some thoroughfares operating at reduced capacity. Drivers are advised to plan alternative routes, allow extra travel time, and follow posted signage. Certain arterial roads may experience delays, and public transit operators have indicated that service adjustments could be in effect to accommodate higher passenger volumes. Police and emergency services have been positioned to respond quickly if needed.

The convergence of a major sporting competition and a high‑profile rock concert highlights the challenges of managing large‑scale gatherings in a metropolitan area already dealing with infrastructure projects. Authorities will monitor the situation throughout the weekend and will respond to any incidents that arise.