Minor work: 520 — In Montréal, at Liesse roundabout, A-40 West access to A-520 East

The A-40 West access ramp to A-520 East at the Liesse roundabout will be closed overnight this weekend as part of ongoing reconstruction work on the overpass above Cavendish Boulevard, according to Quebec 511. The closure runs Saturday from 10 p.m. to 8 a.m. Sunday, forcing westbound drivers into a scenic tour of Saint-Laurent they probably didn't plan on taking. The official detour routes traffic via the A-40 East service road ramp, then a U-turn on Authier Street, back onto the A-40 West service road, up Côte-Vertu Boulevard, and finally onto Montée de Liesse to reach their original destination. Adding to the weekend headache, Highway 40 will see one to two lanes closed upstream starting at 9 p.m., creating the kind of bottleneck that makes you question your Saturday night plans. The Isabey Street access will also be shuttered during this period, labeled with the ominous "Majeure" severity rating that Quebec reserves for disruptions that will genuinely test your patience. For West Island residents, this closure hits particularly hard since the A-520 serves as a crucial connector between the western suburbs and downtown Montreal. Anyone heading from Pointe-Claire, Beaconsfield, or Baie-D'Urfé toward the city center will need to factor in extra time and potentially rethink their route entirely. The detour essentially forces drivers to loop back east before heading west again — the kind of geographic irony that would be funny if you weren't the one sitting in traffic. The construction work is part of broader infrastructure improvements in the area, though the timeline stretches from February 27 to March 1, 2026, suggesting this particular weekend closure is just one piece of a much larger puzzle. The overpass reconstruction above Cavendish represents significant investment in aging infrastructure, but it comes with the inevitable trade-off of short-term pain for long-term gain. Weekend warriors planning late-night adventures or early Sunday errands should definitely check their GPS twice and maybe keep that dépanneur coffee extra strong. Because nothing says "bon dimanche" quite like discovering your usual route has been transformed into a municipal maze that would make even Theseus reach for his phone's navigation app.