OTTAWA -- Two busy access ramps on Highway 417 in Centretown and the Glebe will be closed starting this week for construction.

The Highway 417 eastbound exit ramp at Bronson Avenue will be closed starting at 10 p.m. Monday, until next June.

The Highway 417 westbound access ramp at Lyon Street will close at 10 p.m. Monday. The ramp will remain closed until November 2025.

In a statement, the city of Ottawa says the closures are necessary so crews can replace retaining walls, noise barrier walls and repair existing infrastructure along the highway.

Speaking to reporters Monday, Mayor Jim Watson said these closures would be a challenge for commuters.

"This work has to get done at some point; there's never a perfect time," Watsons said. "We're going to try to do our best to make sure the traffic flows as smoothly as possible but I have to be perfectly frank: it's going to be a challenge." 

Motorists are advised to follow these detours for the closures:

Hwy. 417 eastbound exit ramp at Bronson

  • To exit before reaching the closed ramp, take the Carling/Kirkwood Avenue exit ramp
  • Continue eastbound on Carling Avenue to Bronson Avenue


  • To exit after passing the closed ramp, take the Kent Street exit ramp
  • Turn left at Catherine Street and continue to Bronson Avenue

Hwy. 417 westbound access ramp at Lyon Street

  • Continue westbound on Catherine Street
  • Access Highway 417 westbound at Bronson Avenue

The Ministry of Transportation has announced plans to replace the Bronson Avenue bridge, one of five bridges scheduled to be replaced over the next five years.  Noise barriers are also being added along the highway from Bronson to Lyon Street.