OTTAWA – A section of Highway 417 will fully close in both directions from 8 p.m. on Thursday, July 2 until 6 a.m. on Monday, July 6, resulting in significant traffic impacts.

Lane reductions and ramp closures are scheduled to start at 7 p.m. on Thursday, with the full closure of Highway 417 scheduled to be in place by 8 p.m. The ramp from Rochester Street to 417 West will close at 7 p.m. on June 30. The closures are required to replace the bridges over the CPR and Trillium Line O-Train tracks.

The following on-ramps will also close:

• O’Connor westbound
• Lyon westbound
• Bronson westbound
• Rochester westbound
• Parkdale westbound
• Carling/Kirkwood eastbound
• Parkdale eastbound

 During the replacement, Orangeville Street will also be fully closed between Rochester Street and Booth Street.

The following detours will be in effect during the closure:

Westbound detour for Highway 417 closure

• Westbound motorists must exit the highway at Bronson Avenue
• Continue westbound on Catherine Street
• Continue onto Raymond Street
• Turn left on Booth Street
• Turn right on Carling Avenue
• Take Highway 417 westbound on-ramp from Carling Avenue

Eastbound detour for Highway 417 closure

• Eastbound motorists must exit the highway at Carling/Kirkwood Avenue
• Continue eastbound on Carling Avenue
• Turn left on Bronson Avenue
• Turn right on Chamberlain Avenue
• Continue onto Isabella Street
• Take Highway 417 eastbound on-ramp at Metcalfe Street