South Shore commuters face heavy traffic into Montreal this weekend

Travelers heading from Quebec’s South Shore to Montreal on Saturday and Sunday, August 29‑30, are encountering severe congestion on the region’s primary crossing points, the Samuel‑De Champlain and Victoria bridges, as well as on the Bonaventure highway. Motorists report long queues, reduced speeds, and extended travel times across all three routes. Officials have warned that the combined effect of weekend leisure traffic and ongoing construction projects is expected to keep the flow of vehicles at a standstill during peak periods.

The Samuel‑De Champlain bridge, which carries the Autoroute 10 corridor, is currently operating at near‑capacity levels, with traffic backups stretching several kilometres on both the south‑bound and north‑bound lanes. The parallel Victoria bridge, serving Autoroute 25, shows similar conditions, especially between the interchange at Brossard and the entry points to the island. Drivers have noted stop‑and‑go movement during the morning and evening rush windows, and the provincial police have posted updates on social media to alert commuters.

The Bonaventure highway, a key arterial road that links the South Shore suburbs to downtown Montreal, is also experiencing gridlock. Bottlenecks are forming near the junction with the Décarie Expressway and at the access points to the Champlain Bridge. Heavy trucks and commuter vans add to the slowdown, and the highway’s limited alternative routes force many motorists to remain on the congested stretch for longer periods.

Weekend traffic spikes on these corridors are not unusual; the combination of weekend outings, sporting events, and regional festivals typically pushes demand beyond the infrastructure’s designed capacity. While no official detour plan has been announced, transportation officials recommend allowing extra travel time, using real‑time traffic apps, and, where possible, considering public transit options such as the commuter rail that connects the South Shore to Central Station. The congestion is expected to ease after Sunday night as weekday patterns resume.