Weekend traffic: Detour getting to Mercier Bridge from downtown

Highway disruptions to avoid this weekend:Route 138The ramp toward the Route 138 west and the Mercier Bridge from Highway 20 west will be closed from 10 p.m. Friday to 5 a.m. Monday. Suggested detour is to continue west and turn around at 1st Ave.Highway 40The Île-aux-Tourtes Bridge connecting Montreal Island and Vaudreuil-Dorion will be closed eastbound from 11:59 p.m. Monday to 5 a.m. Tuesday for work on the concrete slab supporting the deck.Continuing disruptionsREM: Trains leaving Bros