From The Montreal Gazette:
MONTREAL - Highway access ramps between the Mercier Bridge and La Prairie will be closed in stages over the weekend, bridge and highways officials say.
The access ramp to the bridge from La Prairie will completely close from 10 p.m. Friday until 10 p.m. Saturday. In addition., the left lane of the access ramp to La Prairie will also be closed during that time.
The ramp from La Prairie to the bridge will close from 10 p.m. Saturday to 5 a.m. Monday. In addition, the left lane of the access ramp from La Prairie will be closed.
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My Comment: I live facing the Mercier Bridge. Last weekend's traffic jams were horrible .... my advice .... stay away from the bridge on the weekends.