This weekend a stretch of the 417 near Lees Avenue will be closed in both directions, leading to major detours.

Here are the details from the City of Ottawa website:

•Highway 417 will be fully closed in both directions for the Lees Avenue Bridge removal.
 •Highway 417 will be closed to eastbound traffic from Metcalfe Street to the Vanier Parkway.
 •Highway 417 will be closed to westbound traffic from Vanier Parkway to Nicholas Street.
 •The closures will begin at 6 p.m. Saturday June 21.
 •At 11 a.m. on Sunday June 22 a single lane will open in both directions.
 •All lanes in both directions will be reopened by 5 a.m. Monday June 23.
Drivers are encouraged to carpool, take transit, walk or cycle.