The Lees Ave. overpass is on the move, this weekend.

Traffic won’t be on Highway 417 between Nicholas St. and the Vanier Parkey section from 6 p.m. Saturday to 11 a.m. Sunday.

The full closure of that section of the Queesnway is necessary for the rapid replacement of the Lees Avenue Bridge.

This is the largest structure in North America to be moved over a highway using the method.

This is the sixth rapid lift replacement undertaken in the City of Ottawa. Still, this is the most complicated with a curved bridge being moved over a curved section of the highway.

Richard Holder of the Ottawa Light Rail Implementation office says crews have been instructed to move the bridge out of the way rather than have lane closures during the Monday morning rush hour.

“The traffic will be open and the highway will be open for 5 am Monday morning,” says Holder.

For more details of lane reductions and closures visit the City of Ottawa website.

Even with the successful installation of the overpass, Lees Ave. won’t be fully reopened until September 15.

With a report from CTV’s John Hua.