MONTREAL - A warning to drivers heading to and from the South Shore -- repair work on the La Prairie ramp of the Mercier Bridge starts Monday, and will continue for the next three months.

The work is the second phase of repairs after construction began in the fall to improve the structure.

The La Prairie ramp has been completely closed since Friday evening as preparations begin. The complete closure continues until Sunday at 5 a.m.

Drivers are asked to detour via the Chateauguay access ramp.