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Section of Highway 417 to close October 19 to 24 for bridge replacement

The Ministry of Transportation Ontario will be closing the following sections of Highway 417 for the rapid bridge replacement over Percy Street, starting at 8 pm on Thursday, October 19 until around 6 am on Tuesday, October 24:

  • Eastbound lanes between Carling/Kirkwood and Metcalfe

  • Westbound lanes between Metcalfe/Catherine and Bronson.

Lane reductions and ramp closures are scheduled to start at 7 pm on Thursday, October 19, with the full closure of Highway 417 scheduled to be in place by 8 pm. The replacement timeline has been extended beyond the usual Monday reopening to accommodate any fall weather that could impact concrete and paving work. The following access ramps will also close:

  • O’Connor westbound

  • Lyon westbound (ongoing)

  • Maitland eastbound

  • Carling eastbound

  • Parkdale eastbound

The following detours will be in effect during the closure:

Westbound detour for Highway 417 closure


  • Westbound motorists must exit the highway at Metcalfe/Catherine

  • Continue westbound on Catherine Street

  • Take the Highway 417 Bronson westbound access ramp

Eastbound detour for Highway 417 closure


  • Eastbound motorists must exit the highway at Carling/Kirkwood

  • Continue eastbound on Carling Avenue

  • Turn right on Bronson Avenue

  • Take ramp to eastbound Riverside Drive

  • Continue eastbound on Riverside Drive

  • Take the Highway 417 Riverside eastbound access ramp (just before the 417 bridge)

For updates on construction and roadwork activity across Ottawa, or for information about traffic and travel planning, visit the City’s traffic map or follow the City’s traffic account on Twitter.

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