This weekend, drivers in downtown Ottawa will face significant traffic disruptions on Highway 417 due to ongoing construction work. Starting at 9 p.m. on Friday, June 5, lane and ramp closures will be implemented, affecting traffic flow until Monday morning. Specifically, two left lanes on the westbound highway will be closed between O'Connor and Preston streets, while one left lane will be closed on the eastbound highway between Preston and Kent streets. Additionally, the on-ramp from O'Connor to the westbound 417 will also be closed, with all closures expected to reopen by 5 a.m. on Monday. Drivers should also note that the westbound on-ramp from Lyon Street is closed, directing traffic to alternative routes via Bronson Avenue or Nicholas Street. Furthermore, construction activities are ongoing near Woodroffe Avenue, and another major project is underway around Bank Street and Riverside Drive. Motorists in Gatineau should also be aware of the La Coupe du Québec de cyclisme event, particularly in the Plateau neighbourhood, which may further impact traffic this weekend.